MTD Software: Purpose-Built Landlord vs Generic Accounting App

Choosing MTD ITSA software in 2026 is not a search for the best product — it is a choice between two categories:

General accounting apps — Xero, QuickBooks, Sage, FreeAgent. Built for small businesses of all kinds. Powerful ledgers, generic accounting logic, no understanding of property-specific concepts.

Purpose-built landlord tools — Landlord Studio, Hammock, Coconut, LetCompliance. Built for UK residential landlords. Know about tenancies, deposits, Section 24, replacement of domestic items, EPCs. Weaker for other business income.

Both categories can file MTD ITSA quarterly updates and the final declaration. The choice is not "which is more compliant" — either passes HMRC. The choice is which one saves you time and stops you making tax errors.

Not tax advice. Take advice on your own portfolio. Software preference is subjective; tax-return accuracy is not.

What generic accounting apps do well

Xero, QuickBooks, Sage are mature accounting platforms with hundreds of thousands of UK users across every kind of small business. Their strengths:

Bank feeds are mature. Every major UK bank connects reliably; transactions import automatically.

Chart of accounts is flexible. You can code anything into any category, if you know how.

Multi-business accounting. A landlord who also runs a consultancy, a shop or an e-commerce store can put everything in one platform.

Third-party integrations. Stripe, PayPal, Shopify, Xero apps marketplace — hundreds of connectors.

Accountant ecosystem. Every UK accountant knows Xero and QuickBooks. Handing over your file at year-end is trivial.

Multi-currency, payroll, VAT. If your landlord business is really a small business with staff and VAT, these features matter.

For a landlord who is also a self-employed professional, running everything in one Xero account is genuinely simpler than juggling a Xero for consultancy + Hammock for properties.

Where generic apps fall short for landlords

The failure mode is domain ignorance. A generic app doesn’t know:

1. Section 24 finance-cost restriction.

Mortgage interest isn’t a deductible expense for individual landlords. It’s a 20% tax credit at the final declaration. Generic apps will happily let you code mortgage interest as an expense and deduct it against rental profit — the wrong tax treatment. You have to know the rule and code it correctly, or your accountant does it at year-end (paying for their time).

2. Replacement of Domestic Items relief.

Buying a £600 fridge to replace an old one is a claimable expense. Buying it as the first fridge in a newly-let property is capital (not currently deductible). Generic apps have no concept of "replacement vs first-time". You know, or you don’t.

3. Mileage at 45p/25p per HMRC.

Landlords can claim mileage at HMRC-approved rates. A generic app has a "mileage" expense category but doesn’t track miles, doesn’t apply the 10,000-mile-tier rule, and doesn’t generate the log HMRC wants on enquiry.

4. Per-property P&L.

Under MTD, all UK residential property income can be reported as one "property business" — HMRC does not require per-property returns. But you benefit from per-property P&L for management purposes (which property is losing money? which needs a rent review?). Generic apps let you tag transactions by "class" or "project", but it takes work to set up.

5. Deposit money separate from rent.

A tenant deposit is not your money — it’s protected in a scheme. Received in your bank account, it must be moved out to DPS/TDS/mydeposits within 30 days. A generic accounting app doesn’t know deposits from rent; you have to code them right or they show as income.

6. Compliance deadlines.

Gas Safety expiring, EICR renewal, EPC below MEES. Generic apps don’t track compliance calendars.

7. Section 8 / Section 13 / statutory forms.

Not an accounting question, but where MTD software becomes "landlord software" you get the tenancy management side too.

What purpose-built landlord apps do well

Landlord Studio, Hammock, Coconut, LetCompliance are built specifically for UK residential landlords. Their strengths:

Property-first data model. Tenancy start/end, rent amount, deposit scheme, EPC rating, compliance dates — all first-class fields.

UK tax categories mapped to SA105. The Self Assessment property pages have specific boxes. Purpose-built apps map transactions directly to those boxes.

Section 24 and Replacement of Domestic Items handled automatically. Mortgage interest tagged as "finance cost" becomes the 20% credit, not a deduction. Replacement items are separated from first-time provision.

Mileage at HMRC rates. With log format ready for enquiry.

Compliance calendar. Gas safety expiry, EICR renewal, EPC, deposit renewal — same platform.

Tenant portal. Not a MTD feature, but a landlord workflow feature many landlords want.

Rent tracking, arrears alerts, Section 8 evidence. Bookkeeping doesn’t sit apart from the tenancy — it is the tenancy.

For a landlord whose only income is property, purpose-built apps make the whole job smaller.

Where purpose-built apps fall short

1. Other business income.

Self-employed? Consultancy? E-commerce? Purpose-built landlord apps mostly cannot handle non-property income. You need a separate tool.

2. Multi-entity accounting.

Corporate landlord with a UK company, VAT-registered? Purpose-built apps are usually individual-focused. Sage or Xero handles corporate accounting better.

3. Full-fat P&L reports.

Generic apps produce full audit trails, month-end reports, budget-vs-actual variance analysis. Purpose-built apps focus on the numbers HMRC wants — rent received, expenses by category, tax due. Beyond that, thinner.

4. Accountant familiarity.

Not every accountant has used Hammock. If your accountant already prefers Xero and refuses to work with anything else, the software choice may be made for you.

The middle path: bridging

Some landlords run both: a purpose-built app for compliance and tenancy workflow, a generic ledger or accountant for filing.

LetCompliance is designed for this. We track compliance, tenancies, rent, expenses, mileage and generate a tax pack in MTD-compatible shape (SA105 category totals, Section 24 finance costs separated, replacement of domestic items separated). You export the pack to your accountant or to a filing product that submits to HMRC via API.

That is our specific scope boundary. We do not press "submit" to HMRC ourselves — that stays with your accountant or with an HMRC-recognised submission tool. Most of our customers pay an accountant £600–£1,500 a year for the filing side.

The bridging model works when:

You want property-specific accuracy (get all the reliefs right)

You have an accountant relationship anyway

You don’t want to learn Xero for one property

The bridging model doesn’t work when:

You want end-to-end filing without an accountant

You have multiple business income streams (property + freelance)

Decision framework

Simple flowchart:

Are you only a landlord (no other business income)?

Yes → purpose-built app is usually the right answer.

No → generic app in the driver’s seat, purpose-built as a bridge if you value the compliance workflow.

Do you file your own tax return without an accountant?

Yes → your MTD software must also submit to HMRC via API. Confirm your chosen tool is on the recognised submission list — not just "MTD-compatible" for data purposes.

No → any tool that generates the right data can be an input to your accountant’s process; they submit.

Do you have 10+ properties?

Yes → the compliance calendar of a purpose-built app pays for itself. Section 24 handling and per-property P&L stop the year-end errors that cost most.

No → simpler portfolio, either category works.

Are you in Scotland or Wales?

Scotland — devolved rates and PRS rules. Check your software handles Scottish Rate of Income Tax. Most do; some don’t.

Wales — mirrors England for income tax; Land Transaction Tax replaces SDLT.

We (LetCompliance) build for UK residential landlords with 1–100 properties, individual or agency. Our tax pack works with any accountant. If you want end-to-end MTD filing, we recommend pairing us with an accountant or an HMRC-recognised submission tool.

Sources

HMRC — Recognised MTD ITSA software list

HMRC — Property income manual (PIM)

GOV.UK — Making Tax Digital for Income Tax: overview

Free PDF · instant by email

Allowable vs Capital Repair Decision Tree

The single line HMRC actually draws between an allowable repair and a capital improvement, with 24 worked examples for UK landlords.

24 real repair scenarios classified
Repair-vs-capital decision tree (1-page A4)
Replacement-of-domestic-items relief explained
Self Assessment line mapping for SA105

Frequently asked questions

Can Xero file MTD ITSA for landlords?

Yes. Xero is on HMRC’s recognised MTD software list and can file quarterly updates and the final declaration. It also handles Making Tax Digital for VAT (for landlords who let commercial property VAT-elected). But Xero doesn’t know a Section 24 finance-cost restriction from a Replacement of Domestic Items claim — you configure it, or a bookkeeper configures it for you.

What does a purpose-built landlord app add?

Property-specific data models (rooms, tenancies, deposits, EPCs), UK compliance calendars (gas, EICR, RTR), rent chasing, mileage logging at 45p/25p rates, and MTD categories pre-mapped to Self Assessment SA105 boxes. You gain accuracy for property tax; you lose the flexibility of a general ledger for non-property income.

Which type of app is right for me?

Purpose-built if you are exclusively a property landlord — the compliance and property-specific reliefs pay for themselves. General accounting if you have other business income (self-employment, freelance, e-commerce) that needs to be tracked in the same books. Some landlords run both — LetCompliance for compliance/tax-prep, an accountant for the HMRC submission.

Can I switch from generic to purpose-built mid-year?

Yes, but keep a clean data cut. Export your property income and expenses to date, close off the generic system for property, and start fresh in the purpose-built app on the first day of the next MTD quarter. Do not run parallel filings — one system files each quarterly update.