Welcome to Summ! We provide a platform that helps users determine their cryptocurrency tax liabilities (Services), as set out in more detail on our website (Site).

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In these Terms, when we say you or your, we mean you as an individual if you are accepting these Terms for yourself. If you are accepting these Terms on behalf of an entity (such as your employer) and you are authorised to do so, then you or your means that entity. When we say we, us, or our, we mean CTC Ledger Pty Ltd (ACN 655 951 812), trading as ‘Summ’. 

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These terms and conditions (Terms) form our contract with you, and set out our obligations as a service provider and your obligations as a customer. You cannot use the Services unless you agree to these Terms.

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Some capitalised words in these Terms have defined meanings, and each time that word is used in these Terms it has the same meaning. You can find a list of the defined words and their meaning at the end of these Terms.

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For any questions relating to these Terms, please contact us at: [email protected].

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This policy is effective as of 7 October 2021. Last updated: 28 May 2026.

Our Disclosures

We may receive a benefit (which may include a referral fee or a commission) should you visit certain third party websites through a link in the Services, or for featuring certain goods or services on the Services.

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These Terms do not intend to limit your rights and remedies at law, including any of your Consumer Law Rights.

Engagement and Term

1. 1.1  These Terms apply from the time you agree to these Terms, until the date these Terms are terminated in accordance with their Terms (Term).
2. 1.2  Subject to your compliance with these Terms, we will provide you with access to the Services.
3. 1.3  Where we require access to your premises or computer systems in order to provide the Services, you agree to provide us with such access free from risk to the safety of our employees and contractors.
4. 1.4  We will not be responsible for any other services unless expressly set out in these Terms or on our Site.
5. 1.5  If we provide you with access to any new or beta services, you acknowledge that because of the developmental nature of such services, you use them at your own risk and we have no obligation to maintain or provide error corrections. Any new or beta services we provide you with access to are for evaluation purposes only and not for production use, and we may discontinue those services at any time at our sole discretion.
6. 1.6  Where you access the Services through a referral or link from a third-party crypto exchange partner or other referral partner, you acknowledge and agree that we are a separate business from that third party. That third party's services are subject to their own terms and conditions, which we are not liable for. Your use of our Services is subject to these Terms. 
7. 1.7  We may amend these Terms at any time, by providing written notice to you. By clicking "I accept" or continuing to use the Services after the notice or 30 days after notification (whichever date is earlier), you agree to the amended Terms. If you do not agree to the amendment, you should cease using the Services. If you have paid upfront for recurring access to any of the Services (excluding one-time purchases) and you would like to cancel them, please contact us in writing within 30 days of receiving notice to cancel that recurring access and we will issue you a pro-rata refund for such Services.  
8. 1.8  You acknowledge and agree that we are not qualified accountants, tax specialists, or financial advisors. The information and results provided by our Services do not constitute professional financial or tax advice. We strongly recommend that you seek advice from a qualified accountant, tax specialist, or financial advisor before making any decisions related to your cryptocurrency taxes or financial matters.
9. 1.9  By using this service, you acknowledge and agree that:
   
   1. (a)  the calculations and information provided are estimates only and may not reflect your actual tax obligations;
   2. (b)  we do not guarantee the accuracy, completeness, or timeliness of the information provided;
   3. (c)  you use this service at your own risk; 
   4. (d)  the information provided should not be relied upon for making financial decisions or filing tax returns; 
   5. (e)  tax laws and regulations are complex and subject to change. It is your responsibility to verify all information and calculations; and 
   6. (f)  we are not liable for any decisions made or actions taken based on the calculations and information provided. 
10. 1.10  We may utilise artificial intelligence (AI) technologies in the process of providing our Services, including generating reports and calculations. By using our service, you acknowledge and agree that while we strive for accuracy, AI-generated content may contain errors, inconsistencies, or biases and you are responsible for reviewing and verifying any AI-generated reports or calculations before relying on them for any purpose. You can find out more about how we use AI in our Privacy Policy.

Account 

1. 2.1  You must sign up for an Account in order to access and use the Services.
2. 2.2  While you have an Account with us, you agree to:
   
   1. (a)  keep your information up-to-date (and ensure it remains true, accurate and complete);
   2. (b)  keep usernames and passwords secure and confidential, and protect them from misuse or being stolen; and
   3. (c)  notify us if you become aware of, or have reason to suspect, any unauthorised access to your Account or any logins linked to your Account.
3. 2.3  If you close your Account, you will lose access to the Services.

Connected Apps

1. 3.1  We may offer functionality that allows you to connect third-party applications, including AI tools (such as Claude, ChatGPT, or other AI clients) (each a Connected App), to your Account via an authorisation mechanism (such as OAuth).
2. 3.2  By connecting a Connected App, you:
   
   1. (a)  authorise that third party to access Your Data (which may include transaction data, tax reports, portfolio data, wallet data and tax settings) to the extent you permit at the time of connection;
   2. (b)  acknowledge that, where you have opted in to write access, that Connected App may also modify or create data within your Account;
   3. (c)  acknowledge that the Connected App is a separate service operated by a third party and is not part of our Services. That third party's own terms and conditions and privacy policy govern their handling of Your Data once it has been shared with them;
   4. (d)  acknowledge that we have no control over, and are not responsible for, how any Connected App accesses, uses, stores, modifies or discloses Your Data once access has been granted; and
   5. (e)  are solely responsible for your decision to connect a Connected App and for any consequences arising from that connection.
3. 3.3  We may, from time to time, identify certain Connected Apps on our OAuth consent screen as recognised providers (Recognised Provider). You acknowledge and agree that:
   
   1. (a)  the Recognised Provider designation indicates only that we have identified the relevant Connected App as originating from a known source based on our internal verification process. It does not constitute an endorsement, recommendation or approval of that Connected App by us in any respect;
   2. (b)  the Recognised Provider designation does not represent any warranty, guarantee or representation by us as to the quality, security, accuracy, reliability or suitability of that Connected App for any purpose, including for use with our Services;
   3. (c)  we have no control over any Recognised Provider and they may change their models, functionality, terms or privacy practices at any time without notice to us; and
   4. (d)  you use any Connected App, whether or not designated as a Recognised Provider, entirely at your own risk.
4. 3.4  Where you complete the OAuth consent screen to connect a Connected App, you authorised that Connected App to act on your behalf in accessing your Account. That authorisation is limited strictly to the scopes you approved at the time of connection. We will not permit a Connected App to perform any action outside the scopes you have approved, and you may review and revoke those scopes at any time through your Account settings.
5. 3.5  Where a Connected App generates outputs relating to your cryptocurrency tax position, including but not limited to capital gains or loss summaries, tax report exports, or transaction reconciliations (AI Outputs), you acknowledge and agree that:
   
   1. (a)  those AI Outputs are generated programmatically by a third-party AI model and are not reviewed or verified by us before being presented to you;
   2. (b)  we make no warranty, representation or guarantee as to the accuracy, completeness or reliability of any AI Outputs;
   3. (c)  such AI Outputs do not constitute financial, tax or accounting advice; and
   4. (d)  you should verify all AI Outputs generated by a Connected App with a qualified accountant or tax specialist before relying on them for any purpose, including filing tax returns.

Fees

1. 4.1  You may choose to purchase Services from, as set out on our Site (Paid Services) or only use the free features of our Site. Paid Services may include one-time purchases, such as a report, or recurring Services. You must pay all amounts due under these Terms in accordance with these Terms or as set out on our Site (as applicable).
2. 4.2  Details of our Paid Services, including features, limitations, fees and billing cycles (for recurring services) are set out on our Site. For recurring services, you will be billed on a regular basis, as set out on our Site, at the beginning of each billing cycle. All other Paid Services must be paid for at the time you order the Service.
3. 4.3  Cancellation: All recurring Services continue for the agreed Service term (that you selected when purchasing the Service) (Service Term). At the end of each Service Term, provided you have paid all fees owing, your recurring Services will be automatically renewed for the same term. If you wish to cancel your recurring Services, you may do so through your Account. Your cancellation will take effect at the end of your current Service Term, and the recurring Services will not be renewed (meaning you will need to continue paying all fees due up until your current Service Term ends). If you are on an annual Service Term, we will provide you with a renewal reminder at least 30 days prior to the Services renewing.
4. 4.4  Our payment methods will be set out at the time you purchase the Services. If you choose to pay your fees using one of our third-party payment processors, you may need to accept their terms and conditions (if this is the case, these will be set out at the time you make payment).
5. 4.5  You must not pay, or attempt to pay, any fees due under these Terms or as a result of your use of the Services by fraudulent or unlawful means. If you make payment by debit or credit card, you must be the authorised card holder. If payment is made by direct debit, by providing your bank account details and accepting these Terms, you authorise our nominated third-party payment processor to debit your bank account, and you confirm that you are either the holder or an authorised signatory of that bank account.
6. 4.6  If any fees due under these Terms or as a result of your use of the Services are not paid on time, we may suspend your access to the Services.
7. 4.7  You are responsible for paying any levies or taxes associated with your use of the Services, for example sales taxes, value-added taxes or withholding taxes (unless we are required by law to collect these on your behalf).

Licence

1. 5.1  During the Term, we grant you a right to use our basic Services in accordance with these Terms. This right cannot be passed on or transferred to any other person. 
2. 5.2  When you purchase our Paid Services, your access rights will vary based on the type of service. For one-time purchases, we grant you the right to access the purchased Service until the earlier of the specified duration of access, the termination of these Terms or your cancellation of the specific Service. For recurring services, we grant you and your Authorised Users a right to access the relevant Services only for the duration that you continue to pay for the Service, subject to these Terms. These rights cannot be passed on or transferred to any other person.
3. 5.3  Where you authorise a Connected App to access your Account, you grant that third party a limited right to access Your Data solely to the extent authorised by you at the time of connection. This right is personal to you and is granted at your direction. We are not a party to any arrangement between you and a Connected App, and we make no representations or warranties regarding the capabilities, security or conduct of any Connected App.
4. 5.4  You must not:
   1. (a)  access or use the Services in any way that is improper or breaches any laws, infringes any person's rights (for example, intellectual property rights and privacy rights), or gives rise to any civil or criminal liability; 
   2. (b)  interfere with or interrupt the supply of the Services, or any other person's access to or use of the Services; 
   3. (c)  introduce any viruses or other malicious software code into the Services; 
   4. (d)  use any unauthorised or modified version of the Services, including but not limited to for the purpose of building similar or competitive software or for the purpose of obtaining unauthorised access to the Services;
   5. (e)  attempt to access any data or log into any server or account that you are not expressly authorised to access; 
   6. (f)  use the Services in any way that involves service bureau use, outsourcing, renting, reselling, sublicensing, concurrent use of a single user login, or time-sharing;
   7. (g)  circumvent user authentication or security of any of our networks, accounts or hosts or those of any third party; or
   8. (h)  access or use the Services to transmit, publish or communicate material that is, defamatory, offensive, abusive, indecent, menacing, harassing or unwanted.

Availability, Disruption and Downtime

1. 6.1  While we strive to always make the Services available to you, we do not make any promises that these will be available 100% of the time. The Services may be disrupted during certain periods, including, for example, as a result of scheduled or emergency maintenance.
2. 6.2  The Services may interact with, or be reliant on, products or services provided by third parties, such as cloud hosting service providers. To the maximum extent permitted by law, we are not liable for disruptions or downtime caused or contributed to by these third parties.
3. 6.3  We do not guarantee the availability, accuracy or performance of any Connected App. Any disruption, error or failure caused by or contributed to by a Connected App is outside our control, and we are not liable for any loss or damage arising from such disruption, error or failure.
4. 6.4  We will try to provide you with reasonable notice, where possible, of any disruptions to your access to the Services.  

Intellectual Property and Data

1. 7.1  We own all intellectual property rights in the Services. This includes how the Services look and function, as well as our copyrighted works, trademarks, inventions, designs and other intellectual property. You agree not to copy or otherwise misuse our intellectual property without our written permission (for example, to reverse engineer or discover the source code of our intellectual property), and you must not alter or remove any confidentiality, copyright or other ownership notice placed on the Services.
2. 7.2  We may use any feedback or suggestions that you give us in any manner which we see fit (for example, to develop new features), and no benefit will be owed to you as a result of any use by us of your feedback or suggestions.

Your Data

1. 7.3  We do not own any of Your Data, but when you enter or upload any of Your Data into the Services, you grant us the right to access, analyse, backup, copy, store, transmit, and otherwise use Your Data for the duration of your use of the Services (and for a reasonable period of time afterwards). We may use Your Data (or disclose it to third party service providers) to:
   
   • (a)  supply the Services to you (for example, to enable you to access and use the Services), and otherwise perform our obligations under these Terms;
   • (b)  diagnose problems with the Services;
   • (c)  improve, develop and protect the Services;
   • (d)  send you information we think may be of interest to you based on your marketing preferences;
   • (e)  perform analytics for the purpose of remedying bugs or issues with the Services; or
   • (f)  perform our obligations under these Terms (as reasonably required).
2. 7.4  You acknowledge and agree that because of the nature of the internet, the processing and transmission of Your Data by us may occur over various networks.
3. 7.5  You are responsible for (meaning we are not liable for):
   
   • (a)  the integrity of Your Data on your systems, networks or any device controlled by you; and
   • (b)  backing up Your Data.
4. 7.6  Where you authorise a Connected App to access Your Data:
   
   • (a)  you acknowledge that we will transmit Your Data to that third party on your instruction, and that once transmitted, Your Data is subject to that third party's own privacy policy and terms of service;
   • (b)  you acknowledge that we cannot control, retrieve or delete Your Data from a Connected App once it has been shared, including where you subsequently disconnect that Connected App from your Account;
   • (c)  disconnecting a Connected App from your Account will prevent future access to Your Data by that third party, but will not cause the deletion of any of Your Data already shared with or retained by that third party; and
   • (d)  you are responsible for reviewing the privacy policy and terms of service of any Connected App before authorising access to Your Data.
5. 7.7  When you use the Services, we may create anonymised statistical data from Your Data and usage of the Services (for example, through aggregation). Once anonymised, we own that data and may use it for our own purposes, such as to provide and improve the Services, to develop new services or product offerings, to identify business trends, and for other uses we communicate to you. This may include making such anonymised data publicly available, provided it is not compiled using a sample size small enough to make underlying portions of Your Data identifiable.
6. 7.8  If you do not provide Your Data to us, it may impact your ability to receive the Services.
7. 7.9  This clause 7 will survive the termination or expiry of these Terms.

Confidential Information and Personal Information

1. 8.1  While using the Services, you may share confidential information with us, and you may become aware of confidential information about us. You agree not to use our confidential information, and to take reasonable steps to protect our confidential information from being disclosed without our permission, and we agree to do the same for your confidential information. This also means making sure that any employees, contractors, professional advisors or agents of ours or yours only have access to confidential information on a 'need-to-know basis' (in other words, the disclosure is absolutely necessary), and that they also agree to not misuse or disclose such confidential information.
2. 8.2  However, either you or we may share confidential information with legal or regulatory authorities if required by law to do so.
3. 8.3  We collect, hold and disclose and use any Personal Information you provide to us in accordance with our Privacy Policy, available on the Site, and applicable privacy laws.
4. 8.4  Where you connect a Connected App to your Account, you acknowledge and agree that that Connected App may receive access to your Personal Information forming part of Your Data in accordance with scopes you have authorised. That Connected App is separate to us, and any complaints, queries or requests relating to the handling of your Personal Information by that Connected App should be directed to that third party. 
5. 8.5  You must only disclose Personal Information to us if you have the right to do so (such as having the individual's express consent).
6. 8.6  We may need to disclose Personal Information to third parties, such as our related companies or our service providers (for example, IT and administrative service providers and our professional advisors).
7. 8.7  Where we are required by law to report on our activities, you acknowledge that from time to time we may request certain information from you in order to meet our requirements, and you agree to provide us with such information within the timeframes reasonably requested by us.
8. 8.8  This clause 8 will survive the termination or expiry of these Terms.

Consumer Law Rights

1. 9.1  In some jurisdictions, you may have guarantees, rights or other remedies provided by law (Consumer Law Rights), and these Terms do not restrict your Consumer Law Rights. We will only be bound by your Consumer Law Rights and the express wording of these Terms. 
2. 9.2  Subject to your Consumer Law Rights and as otherwise stated in these Terms, we do not provide a refund for a change of mind or change in circumstance.
3. 9.3  If you accept these Terms in Australia, nothing in these Terms should be interpreted to exclude, restrict or modify the application of, or any rights or remedies you may have under, any part of the Australian Consumer Law (as set out in Schedule 2 of the Competition and Consumer Act 2010 (Cth)). 
4. 9.4  This clause 9 will survive the termination or expiry of these Terms.

Liability

1. 10.1  To the maximum extent permitted by law, we will not be liable for, and you release us from liability for, any Liability caused or contributed to by, arising from or in connection with:  
   
   • (a)  any Connected App;
   • (b)  any access to, use of, modification of, loss of, or disclosure of Your Data by any Connected App that you have authorised to connect to your Account;
   • (c)  your computing environment (for example, your hardware, software, information technology and telecommunications services and systems); or
   • (d)  any use of the Services by a person or entity other than you.
2. 10.2  Regardless of whatever else is stated in these Terms, to the maximum extent permitted by law:
   
   • (a)  neither we or you are liable for any Consequential Loss;
   • (b)  a party's liability for any Liability under these Terms will be reduced proportionately to the extent the relevant Liability was caused or contributed to by the actions (or inactions) of the other party, including any failure by the other party to mitigate its loss;
   • (c)  (where the Services are not ordinarily acquired for personal, domestic or household use or consumption) in respect of any failure by us to comply with relevant Consumer Law Rights, our Liability is limited (at our discretion) to supplying the Services again or paying the cost of having the Services supplied again; and
   • (d)  our aggregate liability to you for any Liability arising from or in connection with these Terms will be limited to the amount of any fees paid by you to us during the 12 months immediately preceding the event giving rise to the Liability, or if you have not paid for the Service, to AU$1,000.
3. 10.3  This clause 10 will survive the termination or expiry of these Terms.

Notice Regarding Apple

1. 11.1  To the extent that you are using or accessing the Services on an iOS device through a mobile application from the Apple App Store, you further acknowledge and agree to the terms of this clause. You acknowledge that these Terms are between you and us only, not with Apple Inc. (Apple), and Apple is not responsible for the Services and any content available on the Services.
2. 11.2  Apple has no obligation to furnish you with any maintenance and support services with respect to the Services.
3. 11.3  If our mobile application fails to conform to any applicable warranty, you may notify Apple and Apple will refund the purchase price of the mobile application to you. To the maximum extent permitted by applicable law, Apple will have no other warranty obligation whatsoever with respect to the mobile application and any other claims, losses, liabilities, damages, costs or expenses attributable to any failure to conform to any warranty will be our responsibility.
4. 11.4  Apple is not responsible for addressing any claims by you or any third party relating to our mobile application or your use of our mobile application, including but not limited to: (1) product liability claims; (2) any claim that our mobile application fails to conform to any applicable legal or regulatory requirement; and (3) claims arising under consumer protection or similar legislation.
5. 11.5  Apple is not responsible for the investigation, defence, settlement and discharge of any third-party claim that our mobile application infringes that third party's intellectual property rights.
6. 11.6  You agree to comply with any applicable third-party terms when using our mobile application.
7. 11.7  Apple and Apple subsidiaries are third-party beneficiaries of these Terms, and upon your acceptance of these Terms, Apple will have the right (and will be deemed to have accepted the right) to enforce these Terms against you as a third-party beneficiary of these Terms.
8. 11.8  You hereby represent and warrant that: (1) you are not located in a country that is subject to a U.S. Government embargo, or that has been designated by the U.S. Government as a "terrorist supporting" country; and (2) you are not listed on any U.S. Government list of prohibited or restricted parties.

Suspension and Termination

Suspension

1. 12.1  We may suspend your access to the Services where we reasonably believe there has been any unauthorised access to or use of the Services (such as the unauthorised sharing of login details for the Services). If we suspend your access to the Services, we will let you know within a reasonable time of doing so, and we will work with you to resolve the matter, or if it cannot be resolved, then we may terminate these Terms and your access to the Services will end.
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Termination

1. 12.2  We may terminate these Terms (meaning you will lose access to the Services, and any recurring Services will be cancelled) if:
   • (a)  you fail to pay your fees when they are due;
   • (b)  you breach these Terms and do not remedy that breach within 14 days of us notifying you of that breach;
   • (c)  you breach these Terms and that breach cannot be remedied;
   • (d)  we decide to discontinue the Services, in which case we will provide you with at least 90 days' written notice and if you have paid upfront for ongoing access to any of the Services (excluding one-time purchases) we will issue you a pro-rata refund for such Services; or
   • (e)  you experience an insolvency event (including but not limited to bankruptcy, receivership, voluntary administration, liquidation, or entering into creditors' schemes of arrangement).
2. 12.3  You may terminate these Terms if:
   
   • (a)  we breach these Terms and do not remedy that breach within 14 days of you notifying us of that breach; or
   • (b)  we breach these Terms and that breach cannot be remedied, and if you have paid fees for recurring Services upfront, you will be issued a pro-rata refund of any unused part of those fees based on the portion of the then-current Services period remaining.
3. 12.4  You may also terminate these Terms at any time by notifying us through your Account or to our email for notices (as set out in clause 13.8), and if you have purchased any recurring services, termination will take effect at the end of your current Services period.
4. 12.5  Upon termination of these Terms:
   
   • (a)  we will retain Your Data (including copies) as required by law or regulatory requirements; and
   • (b)  any authorisations you have granted to Connected Apps to access your Account will be revoked. However, we are not responsible for any data already shared with or retained by a Connected App prior to termination.
5. 12.6  Termination of these Terms will not affect any other rights or liabilities that we or you may have. 
6. 12.7  This clause 12 will survive the termination or expiry of these Terms.

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General

1. 13.1  Assignment: You may not transfer or assign these Terms (including any benefits or obligations you have under these Terms) to any third party without our prior written consent. We may assign or transfer these Terms to a third party, or transfer any debt owed by you to us to a debt collector or other third party.
2. 13.2  Disputes: Neither we or you may commence court proceedings relating to any dispute, controversy or claim arising from, or in connection with, these Terms (including any question regarding its existence, validity or termination) (Dispute) unless we and you first meet (in good faith) to resolve the Dispute. Nothing in this clause will operate to prevent us or you from seeking urgent injunctive or equitable relief from a court of appropriate jurisdiction. If the Dispute is not resolved at that initial meeting:
   • (a)  where you are resident or incorporated in Australia, refer the matter to mediation, administered by the Australian Disputes Centre in accordance with Australian Disputes Centre Guidelines for Commercial Mediation; or
   • (b)  where you are not resident or incorporated in Australia, refer the matter to arbitration administered by the Australian Centre for International Commercial Arbitration, with such arbitration to be conducted in Sydney, New South Wales, before one arbitrator, in English and in accordance with the ACICA Arbitration Rules.
3. 13.3  Events Outside Our Control: We will not be liable for any delay or failure to perform our obligations (including the Services), if such delay or failure is caused or contributed to by an event or circumstance beyond our reasonable control.
4. 13.4  Governing law: These Terms are governed by the laws of New South Wales, and any matter relating to these Terms is to be determined exclusively by the courts in New South Wales and any courts entitled to hear appeals from those courts.
5. 13.5  Illegal Requests: We reserve the right to refuse any request for or in relation to the Services that we deem inappropriate, unethical, unreasonable, illegal or otherwise non-compliant with these Terms.
6. 13.6  Marketing: You agree that we may send you electronic communications about our products and services. You may opt-out at any time by using the unsubscribe function in our electronic communications. You can find out more about this in our Privacy Policy.
7. 13.7  Nature of Legal Relationship: These Terms do not create, and should not be interpreted so as to create, a partnership, joint venture, employment or agency relationship between us and you.
8. 13.8  Notices: Any notice you send to us must be sent to the email set out at the beginning of these Terms. Any notice we send to you will be sent to the email address registered against your Account.
9. 13.9  Professional Services Disclaimer: The Services do not constitute, and are not a substitute for, financial, legal or risk management advice.

Definitions