UK property tax & investment calculators

Built for overseas investors. Stamp duty here includes the 2% non-resident surcharge and 5% additional-property surcharge that apply from 2025/26.

① Stamp Duty (SDLT) ② Rental yield & cashflow ③ Total purchase cost ④ BTL mortgage stress test ⑤ Mortgage repayment ⑥ Currency & FX ⑦ Rental income tax ⑧ Deal analyser ⑨ Company vs personal ⑩ Net rental income ⑪ Capital Gains Tax ⑫ Inheritance Tax ⑬ FX return (SGD)

For the full scored deal assessment, use the Deal Analyser.

① Stamp Duty Land Tax

Stamp Duty (SDLT) calculator

England & Northern Ireland. For Scotland use LBTT, for Wales LTT (different systems).

Moving / owns before
First-time buyer
First-time buyer relief applies only up to £500,000 and not to additional properties.
Total stamp duty
£38,000
Effective rate 9.50% · added surcharges: 7%

Band-by-band breakdown

    Rates: gov.uk Stamp Duty Land Tax — residential property rates. Effective 1 Apr 2025; additional-property surcharge 5% (from 31 Oct 2024); non-resident surcharge 2%. Always confirm with the official HMRC calculator.

    ② Rental yield & cashflow

    Rental yield calculator

    Gross and net yield, monthly cashflow, and cash-on-cash return if you use a mortgage.

    Gross yield
    6.00%
    Net yield
    4.30%
    Net monthly cashflow
    £896
    Cash-on-cash

    Annual figures

      Net yield = (annual rent − running costs) ÷ price. Cash-on-cash = net income after mortgage interest ÷ cash invested. Interest-only assumed for the mortgage line.

      ③ Total cost of purchase

      How much cash you need at completion

      Combines your deposit, stamp duty and the usual transaction fees.

      Non-resident + additional
      Additional only
      Standard
      Cash required at completion
      £—
        ④ Buy-to-let mortgage stress test

        How much can you borrow?

        BTL lenders size loans on rent using an interest coverage ratio (ICR) and a stress rate, not your salary.

        Max loan (indicative)
        £—

          Simplified BTL affordability model. Actual lender criteria, top-slicing and product rules vary — treat as a guide only.

          ⑤ Mortgage repayment

          Monthly repayment calculator

          Compare interest-only (typical for BTL) with full capital repayment.

          Interest-only / mo
          £—
          Repayment / mo
          £—

            Buy-to-let mortgages are usually interest-only; repayment mortgages clear the loan over the term but cost more monthly.

            ⑥ Currency & FX

            What it costs in your currency

            Convert a GBP purchase into your home currency and see how exchange-rate moves change the cost. Rates are editable — update to today's figures.

            Cost in SGD

              Illustrative only — set the rate to your bank/broker's live figure. FX spreads and transfer fees are not included.

              ⑦ Rental income tax

              Tax on your rental profit

              Estimates UK income tax for a non-resident landlord (individual) vs holding in a company — including the Section 24 mortgage-interest restriction.

              As individual — tax
              £—
              Via company — tax
              £—

                2025/26 rates; simplified. Section 24 gives a 20% credit on mortgage interest for individuals; companies deduct interest but pay corporation tax (19%/25%). Not advice — confirm with an accountant.

                ⑧ Deal analyser

                Analyse a whole deal in one go

                Paste a listing's price and rent and get all-in cost, yield, monthly cashflow and a 5-year projection — for a non-resident additional-property purchase.

                Cash needed
                £—
                Net yield
                Monthly cashflow
                £—
                5-yr total return

                  Combines the SDLT, cost, yield and repayment models above. Growth is an assumption, not a forecast. Excludes income tax — see tool ⑦.

                  ⑨ Ownership structure

                  Company vs personal ownership

                  A simplified annual-income comparison. Section 24 restricts personal mortgage-interest relief to a 20% credit; companies deduct interest in full but pay to extract profit.

                  Basic 20%
                  Higher 40%
                  Additional 45%
                  Better structure (on annual income)

                    Company profit is taxed at 19% (≤£50k) or 25%. Money kept in the company is taxed again when extracted as dividends — not shown here. Educational only. See Personal vs company.

                    ⑩ Cashflow

                    Net rental income

                    Turn gross rent into real net cashflow after costs and tax.

                    20%
                    40%
                    45%
                    Net cashflow after tax (per year)

                      Personal ownership with Section 24 (interest relieved at 20% credit). Educational only.

                      ⑪ On sale

                      Capital Gains Tax

                      Estimate CGT on a UK residential disposal. Non-residents must report within 60 days.

                      Basic 18%
                      Higher 24%
                      Estimated CGT

                        Individuals; after the £3,000 annual exempt amount. Companies pay corporation tax on gains instead. See CGT guide.

                        ⑫ On death

                        Inheritance Tax exposure

                        A conservative, educational estimate. UK property is always within UK IHT.

                        Potential UK Inheritance Tax

                          Uses the £325,000 nil-rate band at 40%. Excludes the residence nil-rate band (rarely available to investment property). This is a strong signal to seek professional advice. See IHT guide.

                          ⑬ For Singapore investors

                          FX return calculator (SGD)

                          See your true return in Singapore dollars, including the currency move.

                          Total return in SGD

                            Simplified: ignores SDLT/finance/tax (use the other tools for those). Shows the FX effect on a GBP investment converted to SGD. IRR is approximate.

                            These calculators are for general guidance only and are not tax or financial advice. Rules change and individual circumstances vary — confirm figures with a qualified adviser and HMRC before you transact.