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Privacy policy

Your privacy is important to us. It is CTC Ledger Pty Ltd's (“Summ”, "Sum Labs", “we”, “us”, “our”) policy to respect your privacy and comply with any applicable law and regulation regarding any personal information we may collect about you, including across our website, and other sites we own and operate.

Crypto Tax Calculator, operated by CTC Ledger Pty Ltd, has been renamed to Summ. All references to 'Crypto Tax Calculator' in this Privacy Policy or related documents now refer to Summ.

Personal information is any information about you which can be used to identify you. This includes information about you as a person (such as name, address, and date of birth), your devices, payment details, and information about how you use a website or online service.

In the event our site contains links to third-party sites and services, please be aware that those sites and services have their own privacy policies. After following a link to any third-party content, you should read their posted privacy policy information about how they collect and use personal information. This privacy policy does not apply to any of your activities after you leave our site.

This policy is effective as of 15 September 2022. Last updated: 17 November 2025.