Prop-Pocket

Rental Profitability Analysis That Works

Published 15 May 2026 by Prop-Pocket Team

Learn how rental profitability analysis works, which costs matter most, and how landlords can track true property performance with confidence.

Why rental profitability is harder to measure than it looks

Every landlord knows their rent figure. Far fewer know their true net yield after all costs are accounted for. Rental profitability analysis closes that gap — and it often reveals surprises.

Gross yield vs net yield

Gross yield is simple: annual rent divided by property value. A £200,000 property generating £12,000 per year has a gross yield of 6%.

Net yield is what actually matters. It deducts mortgage interest, letting agent fees, insurance, maintenance, compliance costs, voids, and management time. That 6% gross yield might become 3.5% net — which changes the investment case entirely.

The costs that catch landlords out

Voids: Even one month's vacancy per year reduces effective annual income by 8.3%. Two months takes it to 16.7%. Factoring in realistic void assumptions changes the numbers dramatically.

Maintenance: Budget at least 1% of property value per year for maintenance and repairs. Older properties or HMOs will be higher. Unexpected boiler replacements, roof repairs, and kitchen refurbishments are when landlords most feel the lack of a financial buffer.

Compliance: Gas safety, EICR, EPC upgrades, and HMO licence renewals add up. These costs are often missed from initial yield calculations.

Mortgage rate changes: Many landlords on tracker or variable rates have seen their mortgage costs rise significantly. Running the numbers at current rates — not the rate when you originally bought — gives a more honest picture.

How to run a rental profitability analysis

1. List all income for each property over the last 12 months
2. List all costs: mortgage payments (interest portion only for tax), agent fees, insurance, repairs, compliance, accountancy
3. Calculate net income and divide by current market value for net yield
4. Compare against your mortgage rate to assess whether the property is still cash-flow positive

Using software to automate the analysis

Doing this manually for one property is manageable. For three or more, it quickly becomes a project. Prop-Pocket's financial hub does this automatically — tracking every income and expense, splitting mortgage payments into capital and interest, and giving you a live P&L per property.

Know your numbers with Prop-Pocket

Prop-Pocket's financial analytics give you gross yield, net yield, and P&L per property — automatically. Start free with your first property.

← Back to all articles