Free BTL Calculator

Buy-to-Let Calculator UK 2026

Calculate rental yield, cash flow, and ROI for any UK buy-to-let property. Make data-driven investment decisions in minutes.

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Example BTL Analysis

See how our calculator analyses a real buy-to-let opportunity

3-Bed Terraced House, Manchester

Purchase Price: £180,000

Investment Details

Deposit (25%)£45,000
Mortgage Amount£135,000
Interest Rate5.5%
Monthly Rent£950

Calculated Results

Gross Yield6.33%
Net Yield4.89%
Monthly Cash Flow£157
Annual Cash Flow£1,884
Cash-on-Cash Return4.19%

What the BTL Calculator Analyses

Gross Rental Yield

Annual rent as percentage of property value

Net Rental Yield

Yield after all expenses are deducted

Monthly Cash Flow

Net income after mortgage and costs

Cash-on-Cash Return

Annual return on your cash invested

Total Return

Combined rental + capital appreciation

Break-even Analysis

Minimum rent needed to cover costs

BTL Calculator FAQs

What is a good rental yield for BTL in the UK?

A good gross rental yield for buy-to-let in the UK is typically 5-8%. In high-yield areas like Liverpool, Manchester, and Glasgow, yields of 7-10% are achievable. In London and the South East, yields are lower (3-5%) but capital growth potential is higher.

How do I calculate BTL rental yield?

Gross yield = (Annual Rent / Property Price) x 100. For a property worth 200,000 with 1,000/month rent: (12,000 / 200,000) x 100 = 6% gross yield. Net yield deducts costs like management fees, maintenance, and void periods.

What costs should I include in BTL calculations?

Include: mortgage payments, landlord insurance, maintenance (budget 10% of rent), letting agent fees (8-12% of rent), void periods (typically 1 month/year), ground rent/service charges, and tax (income tax on profits).

How much deposit do I need for a BTL mortgage?

Most BTL mortgages require 25% deposit minimum. With 25% deposit you will get better rates. Some lenders offer 20% deposit BTL mortgages but at higher interest rates. Our calculator shows how deposit size affects your returns.

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