Best MTD Software UK 2026: Free and Paid Options Compared

Several genuinely free MTD-compatible options exist. Here is how they compare for the 2026/27 tax year:

AccountsOS takes a fundamentally different approach to MTD compliance. Rather than giving you another accounting interface to learn, it lets you chat with your books in plain English. Ask "how much did I spend on travel this quarter?" and get an instant answer. Upload a receipt and it gets categorised automatically using AI. When your quarterly deadline approaches, AccountsOS prepares your submission and walks you through confirming the figures — no manual data entry required. Key advantages of AccountsOS for MTD: - **AI-native** — built from the ground up with AI, not bolted on afterwards. The AI understands UK tax rules, HMRC categories, and can explain your figures in plain English. - **AI does the work** — the AI categorises transactions, captures receipts, and builds your return, so you review rather than type. It is £20 a month after a 14-day free trial, with no card required to start. - **UK-specific** — designed exclusively for UK taxpayers. Every category, deadline, and rule is HMRC-aligned. - **Voice-first** — talk to your books while driving, walking, or cooking. No screen required. - **HMRC integration** — direct API connection to HMRC for MTD submissions, VAT returns, and deadline tracking. - **Receipt dump** — forward receipts by email or upload them. AI handles categorisation and matching. AccountsOS is not trying to replace Xero or QuickBooks for large businesses with complex needs. It is built for the solo founder, freelancer, or landlord who wants MTD compliance without becoming an accountant.

Your choice depends on three factors: your business type, your budget, and your comfort with technology. **Sole traders with simple income**: A free option like AccountsOS or QuickFile is likely sufficient. You do not need advanced features — you need reliable quarterly submissions and basic expense tracking. **Landlords with property income**: Look for software that handles property income categories specifically. AccountsOS and FreeAgent both handle property income well. Xero can handle it with the right chart of accounts setup. **Freelancers and contractors**: FreeAgent has been the go-to for years, especially if your bank offers it free. AccountsOS is a strong alternative if you want AI-powered categorisation without the monthly cost. **Multiple income streams**: If you have both self-employment and property income, you need software that can handle both in a single return. Most MTD software supports this, but check before committing. **Already using accounting software**: If you already use Xero, QuickBooks, or Sage, the simplest path is to stay with your current provider and ensure your plan includes MTD for ITSA. Switching software is disruptive and rarely necessary. **Technophobe**: AccountsOS is designed specifically for people who are not comfortable with traditional accounting software. The chat interface means you never need to navigate complex menus or understand double-entry bookkeeping.

If you are currently using software that is not MTD-compatible, switch well before April 2026 to give yourself time to set up and learn the new system. Steps to switch: 1. **Export your data** from your current system — most software offers CSV or Excel export of transactions, contacts, and invoices 2. **Choose your new MTD software** — use this guide to compare options 3. **Import your historical data** — most MTD software supports CSV import for bank transactions and contacts 4. **Set up your bank feeds** — connect your bank account for automatic transaction import 5. **Reconcile** — verify that your opening balances match between old and new systems 6. **Run parallel for one month** — if possible, run both systems side by side for a month to catch any discrepancies 7. **Start using the new system exclusively** from the beginning of a new quarter Ideally, switch by January 2026 to give yourself a full quarter of practice before MTD starts in April. Switching in March is technically possible but leaves no margin for error. AccountsOS supports CSV import from all major UK banks (Barclays, Revolut, Starling, Monzo, HSBC, Lloyds) and can import transaction history to get you up and running quickly.