Briefcase

The arrival of MTD for Income Tax has pushed many practices to look again at how client paperwork turns into quarterly submissions. Briefcase is a young UK company betting that one AI layer can capture, reconcile, close and file, either inside its own ledger or on top of Xero and QuickBooks.

What it does well. It is built for the UK from the ground up: open banking feeds from more than 80 UK banks, VAT returns, HMRC recognition for MTD for Income Tax, and capture by WhatsApp, which suits sole traders and landlords who will never install an app. Autopilot goes further than capture tools by handling accruals, prepayments and fixed assets, and the company says it only fully automates a treatment after a user has approved similar ones. Pricing is by volume, not per user, from £19 a month for 75 documents a quarter, with every feature on every plan. ISO 27001, European data storage and zero retention by AI providers answer the obvious security questions, and the Claude connector is a useful extra.

Where it falls short. It is young, founded in 2024, and the full ledger only launched in October 2026, so long-term evidence is thin. Volume plans auto-upgrade by default if you exceed a limit by more than 10 percent in a quarter, and unused limits do not roll over, which can surprise a busy client. Sage, FreeAgent and IRIS are not supported. Moving clients onto Briefcase Ledger means leaving Xero, which a practice should treat as a real migration with lock-in risk. The headline customer count of more than 6,000 UK businesses is the company's own.

Best for. UK practices with sole trader and landlord clients facing MTD for Income Tax, and Xero or QuickBooks firms wanting deeper automation than Dext without per-user fees.

Verdict. One of the more interesting UK entrants. Trial Briefcase Connect on two Xero clients first, compare Autopilot against Dext or AutoEntry on the same month, and file a test VAT return before considering the standalone ledger for MTD clients. Check partner pricing before rolling it out.