MTD tax filing,
done properly.

MTD ITSA requires self-employed individuals and landlords with income over £50,000 to keep digital records and send quarterly updates to HMRC from April 2026, replacing the annual Self Assessment return.

No. Our bridging import lets you export a CSV from any spreadsheet — Excel or Google Sheets — and review figures mapped to HMRC's quarterly-update schema. Live submission remains disabled pending production access.

Yes. Your accountant can sign up for an Agent account, add you as a client, and submit quarterly updates and Final Declarations on your behalf.

Self-employment, UK property (FHL and non-FHL), foreign property income, year-end adjustments, BSAS, and Final Declaration — the full MTD ITSA scope.

ArcTax currently connects to HMRC's sandbox using OAuth 2.0. Live submissions will remain disabled until HMRC grants production access and recognition.

Yes — sign up, connect to HMRC, and explore the dashboard at no cost. Billing only starts when you're ready to submit.

Anyone who is self-employed or receives rental income and whose total qualifying gross income exceeds the relevant threshold must use MTD-compatible software. From April 2026 that threshold is £50,000, dropping to £30,000 in 2027 and £20,000 in 2028. PAYE-only employees are not affected.

MTD ITSA becomes mandatory for sole traders with gross self-employment income over £50,000 from 6 April 2026. If your income is between £30,000 and £50,000 the start date is 6 April 2027, and for income over £20,000 it is 6 April 2028. The threshold is assessed against your previous tax year's income.

Yes, if your total qualifying income — rental income plus any self-employment income — exceeds the threshold. UK property landlords, foreign property landlords, and mixed-income taxpayers all fall within the MTD ITSA scope. The rollout follows the same phased schedule as sole traders: £50k from April 2026, £30k from April 2027, £20k from April 2028.

HMRC requires you to keep digital records of all business income and expenses throughout the tax year. This can be in dedicated accounting software, a spreadsheet, or any digital format — paper records are no longer compliant. If you use a spreadsheet, you must connect it to HMRC via bridging software to submit your quarterly updates.

HMRC uses a points-based penalty system for MTD. Each missed quarterly update earns a penalty point, and once you reach the threshold a £200 fixed penalty applies. Late payment of tax also incurs interest. Persistent non-compliance can trigger a formal HMRC compliance check. The safest approach is to get your software in place well before your mandatory start date.