UK calculators
Mortgage and stamp duty tools plus HMRC Self Assessment estimates for UK freelancers and sole traders.
Mortgage & stamp duty
UK Mortgage Calculator
Repayment or interest-only monthly payment in GBP.
Open calculator →UK Mortgage Payment Calculator
Principal and interest for UK repayment mortgages.
Open calculator →UK Stamp Duty Calculator
Estimate SDLT on England & Northern Ireland purchases.
Open calculator →UK Amortization Calculator
Repayment schedule for UK fixed-rate mortgages.
Open calculator →Self-employed tax
Popular mortgage scenarios
UK mortgages and stamp duty
UK repayment mortgages pay down capital and interest each month. Our calculator supports repayment and interest-only modes, with amortization schedules on the dedicated schedule tool.
Stamp Duty Land Tax (SDLT) applies in England and Northern Ireland with progressive bands, first-time buyer relief, and additional-property surcharges. Scotland and Wales use separate taxes (LBTT and LTT).
Self Assessment for sole traders
Self-employed profits are taxed through HMRC Self Assessment, including Class 4 National Insurance on earnings above the lower profit threshold. Payment on account may apply when your bill exceeds £1,000.
Keep business records aligned with HMRC allowable expense rules. This estimator is a planning aid — not a substitute for an accountant or HMRC's own calculation.