Stamp Duty Calculator
Estimate UK stamp duty land tax (SDLT) on a property purchase.
Accounts for first-time buyer relief on properties up to £625,000.
Stamp duty (also called transfer tax, deed tax, or conveyance duty depending on the country) is a government tax paid when ownership of property changes hands. It is typically calculated as a percentage of the purchase price, often on a tiered (progressive) scale.
General formula: Stamp Duty = Σ (Band Width × Band Rate)
Most countries apply different rates to different price bands — like income tax brackets for property.
What each variable means:
- Band Width — the portion of the purchase price that falls within each tax bracket.
- Band Rate — the percentage applied to that portion.
- Effective Rate — total tax ÷ purchase price (always lower than the top marginal rate).
Worked example (UK SDLT, standard residential, 2024): Purchase price: £400,000
- £0–£250,000 at 0% = £0
- £250,001–£400,000 at 5% = £150,000 × 5% = £7,500
Total stamp duty = £7,500 (effective rate: 1.875%)
Worked example (Australian stamp duty, Victoria, approx.): Purchase price: AUD $600,000
- $0–$25,000 at 1.4% = $350
- $25,001–$130,000 at 2.4% = $2,520
- $130,001–$440,000 at 5% = $15,500
- $440,001–$600,000 at 6% = $9,600
Total ≈ AUD $27,970
Key points:
- First-home buyer concessions and exemptions are common — always check locally.
- Some jurisdictions charge additional surcharges for foreign buyers (5–15% extra).
- Stamp duty is generally due within 14–30 days of settlement.