Property Affordability Calculator – Buy to Let, Residential & Commercial

Use this free calculator to estimate how much property you can afford in the UK, including deposit, stamp duty, solicitor fees, and more. Works for residential, buy-to-let, and commercial purchases.

Property Affordability Checker

Optional Fees:

⚠️ This tool provides estimates only. Consult a mortgage advisor before committing.

Know Your Budget Before You Commit

At T Samuel Estate Agents, we know that buying a commercial or buy-to-let property involves more than just the asking price. Our investment property mortgage affordability calculator helps you break down all associated costs – from deposit requirements to stamp duty and solicitor fees – so you’re not caught off guard.
  • Works for Buy to Let, Residential and Commercial purchases
  • Includes optional fees like valuation, registry, and search costs
  • Helps you understand monthly mortgage affordability
Get Help

What This Calculator Does

This tool helps you estimate the total upfront cost and monthly repayments for purchasing a property in the UK. It includes optional fees such as search costs, land registry, and mortgage product fees.

Whether you're buying a buy-to-let, residential, or commercial property, this UK property affordability calculator will help you plan realistically based on your available deposit and budget.

Frequently Asked Questions

This tool calculates your total upfront costs (deposit, stamp duty, legal fees, etc.) and estimates monthly mortgage repayments based on your chosen interest rate and loan term.

Yes. It uses typical UK lender criteria, including 65% loan-to-value (LTV) for commercial and buy-to-let mortgages, and standard legal and admin fees.

You can, but leasehold purchases often include additional ground rent or service charges not included in this calculator. Use this tool as a guide, then speak to our team for a full breakdown.

No. This calculator assumes a repayment mortgage. If you’re considering an interest-only option, please speak to a qualified broker or contact T Samuel.

As a rule of thumb, your monthly income should comfortably exceed your monthly repayments. Many lenders will stress test affordability — use this tool to get a rough monthly figure.

Yes. It’s designed for buyers purchasing in areas like Aberdare, Mountain Ash, Merthyr Tydfil, Pontypridd, and the wider South Wales Valleys.

Once you know your affordability, we recommend speaking with our team to view suitable properties or get a formal valuation to support your purchase plans.

Yes, prices and upfront costs vary by location. Aberdare and Mountain Ash may offer better value per square foot than areas closer to Cardiff. Use this calculator to compare based on local asking prices.

Absolutely. Whether you're buying a retail unit, office space, or light industrial premises, this calculator will help you understand the costs before making an offer.

Yes. T Samuel can provide professional valuations, including RICS Red Book reports, which are often required for mortgage approval.

Need Advice on Financing Your Property?

We can connect you with trusted mortgage brokers who specialise in residential, buy-to-let, and commercial finance.
Five people posing in an office with a green neon sign reading "Samuel Estates Agents" in the background. Four are sitting on a teal sofa, and one is standing.
T Samuel Estate Agents Limited © 2026 All Rights Reserved. Company Number: 11814439