Affordable MTD Software for Portfolio Landlords: 5+ Properties Guide

Portfolio landlords face a pricing problem that single-property owners never encounter. Most MTD software looks affordable at the headline rate — £10 per month here, £15 per month there — until you multiply it across 10, 15, or 20 properties and discover your annual software bill has quietly climbed into four figures. Per-property pricing models that seem reasonable at three properties become genuinely expensive at scale, and the platforms rarely advertise the true cost of a larger portfolio.

Making Tax Digital does not care how many properties you own. The quarterly submission requirements are the same whether you manage one buy-to-let flat or a portfolio of twenty houses. But the software costs to meet those requirements can vary by hundreds of pounds depending on which platform you choose and how its pricing scales. For landlords with five or more properties, selecting the wrong pricing model can mean overpaying by £200 to £400 per year for functionality that is available elsewhere at a flat rate.

This guide models the real costs of eight popular MTD-compliant platforms across four portfolio sizes — 5, 10, 15, and 20 properties — to identify which options genuinely remain affordable as your portfolio grows. We also explain the per-property pricing trap, compare flat-fee versus per-property models, and recommend the best value platform at each scale.

Why Portfolio Landlords Pay More

The majority of landlord software platforms use per-property pricing tiers. The logic seems fair on the surface — more properties means more data, more transactions, and more server resources. But in practice, the marginal cost of adding a property to a cloud-based platform is negligible. The real reason for per-property pricing is revenue optimisation: it allows platforms to extract more money from their most engaged users, who are also the least likely to switch because they have the most data locked into the platform.

For portfolio landlords, this pricing model creates a compounding cost problem. A platform charging £9.99/month for up to 3 properties might charge £14.99 for 4-9 properties and £24.99 for 10+. At 15 properties, you are paying the same £24.99 as someone with 10 — but at 20, some platforms introduce yet another tier or add per-property surcharges. The costs are not always transparent upfront, and landlords often discover the true price only after they have invested significant time importing data and configuring their portfolio.

Cost Comparison: 5, 10, 15, and 20 Properties

The following table shows the annual cost of eight popular platforms at four portfolio sizes. All figures are based on published pricing as of March 2026 and include VAT where applicable. We have used each platform's most relevant tier for a self-managing landlord — not agency or enterprise plans. For our full ranking of budget MTD software, see the low-cost MTD software UK 2026 guide.

The Per-Property Cost Trap

Per-property pricing punishes growth. Every time you acquire a new property, your software cost increases — even though the platform's marginal cost of serving that additional property is close to zero. This creates a perverse incentive: the more successful you are as a portfolio landlord, the more you pay for the tools that help you succeed. Flat-rate platforms like Latch remove this penalty entirely, allowing you to grow your portfolio without watching your software bill grow alongside it.

The cost trap is particularly insidious because switching platforms becomes harder over time. Once you have three years of transaction history, tenant records, compliance documents, and lease data in a platform, migration is a significant project. Landlords who start on a per-property platform at 3 properties often find themselves locked in at 15 properties, paying far more than they would on a flat-rate alternative but reluctant to invest the time in switching. Choosing a flat-rate platform from the outset avoids this problem entirely. For a detailed analysis of how much Latch can save you, see our Latch savings calculator.

Flat-Fee vs Per-Property Pricing

The comparison is stark for growing portfolios. Flat-fee platforms offer cost certainty that per-property models cannot match. A landlord planning to grow from 5 to 20 properties over the next three years can budget exactly £240/year for Latch Pro throughout that entire growth phase, while a Landlord Studio user would see costs climb from £180 to £540 over the same period. The £1,080 difference over three years is meaningful — it covers the deposit on a new property or a significant maintenance reserve contribution.

Not all flat-fee platforms are created equal, however. GoSimpleTax at £39.99/year is flat-rate but offers no property management. Xero at £300/year is flat-rate but requires property-specific add-ons that can push costs higher. Hammock at £96/year is flat-rate with good MTD compliance but limited property management. Only Latch Pro at £240/year combines flat-rate pricing with a comprehensive feature set that genuinely replaces multiple tools. The true comparison is not just annual cost but total cost of ownership — including any additional tools you need to fill feature gaps.

Best Value at Each Scale

5 Properties

At five properties, most platforms are still relatively affordable. GoSimpleTax wins on pure cost at £39.99/year, but it is a tax-only tool with no operational features. Hammock at £96/year adds landlord-specific tracking and MTD submissions. Latch Pro at £240/year costs more but delivers a complete property management platform including AI, Open Banking, and compliance tracking. For landlords who are serious about growing beyond five properties, starting with a flat-rate platform avoids the cost escalation that hits at 10+.

10 Properties

At ten properties, the per-property pricing trap becomes visible. Landlord Studio reaches £300/year, surpassing Latch Pro's £240/year while offering fewer features. Hammock remains excellent value at £96/year for pure tax tracking, but the lack of property management features becomes more painful as portfolio complexity increases. At this scale, landlords typically need tenant management, compliance tracking across multiple properties, and automated workflows to manage their time effectively.

15-20 Properties

At fifteen to twenty properties, the gap between flat-rate and per-property platforms is impossible to ignore. Landlord Studio costs £420 to £540 per year — more than double Latch Pro's £240. Even Landlord Vision at £379/year, which is technically flat-rate, costs significantly more than Latch Pro while offering no AI features, no compliance tracking, and no tenant management. At this scale, the savings from choosing a flat-rate platform compound year over year, and the operational features of a full management platform become essential rather than optional.

Why Latch Is Built for Scale

Latch was designed from the ground up for portfolio landlords, not retrofitted from a single-property tool. The flat £20/month pricing reflects a deliberate decision to reward growth rather than penalise it. Every feature works across your entire portfolio without per-property restrictions, and the AI automation becomes more valuable — not more expensive — as your portfolio grows. Here is what scales with you. For a comprehensive look at why Latch leads the budget MTD market, see our Latch as the best low-cost MTD solution guide.

• Flat £20/month regardless of whether you have 4 properties or 400
• AI categorisation that saves hours at scale by learning your expense patterns across all properties
• Bulk expense recording for costs that apply across multiple properties simultaneously
• Portfolio-wide compliance dashboard tracking gas safety, EICRs, EPCs, and deposit protection for every property
• Multi-property reporting with consolidated profit and loss, rent roll, and cash flow views
• Tenant management across your entire portfolio with lease tracking and automated rent monitoring
• Open Banking integration connecting all your bank accounts for automated transaction import
• Single quarterly MTD submission covering all properties — no need to file separately for each one

The scalability advantage compounds over time. A landlord who starts with Latch at 5 properties and grows to 20 over five years pays exactly £1,200 in total software costs across that entire period. The same landlord on Landlord Studio would pay approximately £1,740 — a £540 difference that could fund a boiler replacement or a month of void cover. And the Latch landlord gets AI automation, compliance tracking, and tenant management throughout, while the Landlord Studio landlord gets income tracking and tax reports.

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