making-tax-digital

Professional Open Source E-Invoicing System for PHP (Yii3) with UBL 2.4 and Peppol support

Open-source Making Tax Digital (MTD) tax planning and bookkeeping software for UK sole traders: deterministic Income Tax & NIC engine, CSV bank import, receipts, reconciliation, quarterly updates. Next.js · TypeScript · PostgreSQL.

Open-source HMRC Making Tax Digital VAT integration for ERPNext.

Copy extra details into invoices.

UK-first ERP for small British businesses: MTD VAT, EU trade, and product carbon in the schema

A background agent that works out which UK tax obligations actually apply to you, traces every conclusion back to gov.uk, and stays silent unless a human is genuinely needed. Built with the Strands Agents SDK.

Landlord Studio — independent third-party profile of a public API surface, by API Evangelist. Landlord Studio is a property management platform founded in 2014 that helps landlords and property managers track rental income and expenses, collect rent online, screen tenants, manage documents, and generate financial reports including Schedule E tax-re

FreeAgent — independent third-party profile of a public API surface, by API Evangelist. FreeAgent is UK-focused cloud accounting software for small businesses, freelancers, and accountants, providing invoicing, expense tracking, time tracking, project management, banking, payroll, and Self Assessment / VAT filing through HMRC's Making Tax Digital.

HMRC UK Tax Authority — independent third-party profile of a public API surface, by API Evangelist. HM Revenue and Customs (HMRC) provides over 115 APIs through the HMRC Developer Hub for UK tax compliance including Making Tax Digital for VAT and Income Tax, PAYE, customs declarations, corporation tax, and construction industry scheme.