ROI calculator
A fast ROI filter for UK property deals.
Then graduate to Deal Lab.
Use this free calculator to sanity-check cash in, cashflow, yield, and downside. When a deal deserves real underwriting, PropertyScout takes you further.
Inputs
Quick deal maths
Keep it simple: purchase, cash-in, rent, interest rate, and a few honest operating costs.
Operating assumptions
(edit these — this is where most people lie to themselves)Other costs are intentionally one bucket here (insurance, service charge, ground rent, compliance, small repairs). The full app breaks this down further.
Important
This is an estimate. It excludes tax, financing fees, tenant-find fees, major refurb surprises, and unusual property costs. Use it to filter deals — not to “prove” a deal.
Output
First-pass underwriting summary
Total cash in
£0
Deposit + refurb + fees
Net monthly cashflow
-£75
After interest + basic costs
ROI (net)
0.0%
Annual net / cash in
Gross yield
0.0%
Rent × 12 / purchase
Net yield (simple)
0.0%
Annual net / purchase
Interest cover
—
Net income before interest / interest
Stress test (simple)
Rate up + rent down. Same voids/costs.
Stress monthly cashflow
-£75
Rate 2.00% · Rent £0
Stress ROI
0.0%
Same cash-in
Use this to kill weak deals early
This calculator is a fast filter, not a forwardable memo. It helps you decide whether a listing deserves the next hour; the full app adds evidence, risk posture, offer logic, and Deal Pack output.
Tip: hit Load example to see realistic outputs immediately.