# Adsum

> Building tax systems for smarter finance

Adsum builds modern, AI-enabled tax technology and tailored financial products for businesses, accountants and finance professionals.

## Products

- [OpenTax](https://opentax.adsum-works.com): Portfolio-wide HMRC visibility for accountancy firms. Consolidates VAT, PAYE, Corporation Tax and Self Assessment data across client portfolios.

## Company Information

- Company: Adsum Technologies Ltd
- Registration: 12471071
- FCA Registration: 921976
- ICO Registration: ZB071038
- Location: 123 Buckingham Palace Rd, London SW1W 9SH

## Contact

- Website: https://www.adsum-works.com
- Email: info@adsum-works.com
- Phone: +44 (0)207 412 8404

## Pages

- Home: https://www.adsum-works.com/
- About: https://www.adsum-works.com/about-us
- Careers: https://www.adsum-works.com/careers
- Contact: https://www.adsum-works.com/contact-us
- Legal: https://www.adsum-works.com/legal
- Privacy Policy: https://www.adsum-works.com/legal/privacy-policy
- Terms of Use: https://www.adsum-works.com/legal/terms-of-use