For Landlords
Landlord accounting software
built for MTD ITSA
Track rental income across every property, claim all your allowable expenses, and submit quarterly updates directly to HMRC — all from one place. MTD is already mandatory for landlords earning over £50,000.
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MTD mandate for landlords
MTD ITSA is already live — are you compliant?
Making Tax Digital for Income Tax replaced the annual Self Assessment return for landlords above the income threshold. Quarterly digital submissions to HMRC are now a legal requirement — not an option.
April 2026
£50,000+ rental income — MTD ITSA mandatory. Quarterly updates required from 6 April 2026.
April 2027
£30,000+ rental income — the second cohort becomes mandated. Covers millions more UK landlords.
By January
Final Declaration — replaces the Self Assessment tax return. Submitted once per tax year after all four quarters are filed.
Already in scope? Margin can file for you automatically.
Enable auto-filing in Margin and quarterly updates are submitted to HMRC on the morning of each deadline — without you logging in or doing anything. Margin checks your books are complete before filing and holds the submission if they're not.
Allowable expenses
Every landlord expense — categorised correctly
HMRC allows landlords to deduct certain expenses from rental income before calculating tax. Margin maps your transactions to the correct HMRC property expense categories automatically.
| Expense type | HMRC allowable? | Notes |
| Letting agent fees | ✓ Yes | Full deduction |
| Property maintenance & repairs | ✓ Yes | Repairs only — not improvements |
| Buildings & contents insurance | ✓ Yes | Full deduction |
| Mortgage interest | Restricted | Basic rate (20%) tax credit only since 2020 |
| Council tax (if landlord pays) | ✓ Yes | Full deduction |
| Accountant / professional fees | ✓ Yes | Full deduction |
| Advertising & marketing | ✓ Yes | Full deduction |
| Capital improvements | ✗ No | Claimed via Capital Gains Tax on disposal instead |
Margin's AI bookkeeping suggests the correct category for each transaction. You review and confirm — building a clean record that maps directly to your HMRC quarterly submission.
Common questions
Do I need accounting software as a landlord?
If your rental income exceeds £50,000 (from April 2026) or £30,000 (from April 2027), you must use MTD-compatible software. Even if you're below the threshold, software saves significant time compared to spreadsheets and ensures your records are HMRC-compliant when you do become mandated.
Can I use Margin if I have both rental income and self-employment income?
Yes — Margin handles both. You can track self-employment profit and rental profit separately, and both feed into a single MTD ITSA quarterly submission to HMRC. The tax calculation shows your blended liability correctly.
Does Margin handle the mortgage interest restriction correctly?
Yes. Margin applies the mortgage interest restriction automatically — the full amount is recorded as an expense for tracking purposes, but only the basic rate (20%) tax credit is applied when calculating your tax liability, in line with HMRC rules that have applied since 2020.
What if I have properties in different names or a limited company?
Margin is designed for individual landlords filing under Self Assessment (sole name or joint ownership). Limited company landlords file Corporation Tax rather than Self Assessment — Margin's current version is for personal tax. We're working on a company accounts module for a future release.
How does auto-filing work for landlords?
Enable auto-filing in Settings → Integrations → MTD ITSA. Margin checks your books each morning during the filing window. If at least 80% of transactions are categorised (configurable), it submits the quarterly update to HMRC automatically at 08:00. If books are incomplete, it holds the filing and shows a warning on your dashboard so you can act before the deadline.