1. What is stamp duty?
Stamp duty is a tax paid when you buy property. It's charged by state or national
governments, and the rate depends on the purchase price, buyer type, and location.
In most markets, it's paid within 30–90 days of the transaction — but you should
budget for it from the moment you start considering a purchase.
2. Why it's a big deal
Stamp duty alone can add 4%–12% to the property price, depending
on the country and state. Add registration, legal fees, and other costs, and the
total transaction cost often lands at 6%–15% of the purchase price.
⚠️ On an ₹80 lakh property in India, stamp duty + registration can cost ₹6–₹8 lakh. On a £500,000 property in the UK, SDLT can be £15,000+. This is money you'll never get back.
3. How the calculation works
There are two main models:
- Flat rate: a single percentage applied to the whole purchase price (most Indian states use this).
- Banded / progressive: different rates apply to different portions of the price (UK SDLT, Australian state duties).
Under a banded system, only the portion of the price within each band is taxed at
that band's rate — like income tax. This calculator handles both models.
4. First-time buyer relief
Many markets offer concessions for first-time buyers:
- UK: no SDLT up to £425,000; reduced rate up to £625,000
- Australia (NSW): exempt below $800,000; concessions up to $1M
- India: some states offer 1%–2% concessions; women buyers often get 1% lower rates
- Singapore: no ABSD for citizens on first property
✓ If you're a first-time buyer, check your eligibility — the savings can be substantial (tens of thousands in some markets).
5. Registration vs. stamp duty
These are often confused:
- Stamp duty is the tax on the property transaction.
- Registration fee is the fee for officially recording the transfer in government records. In India it's typically 1% of the property value. In the UK it's included in the SDLT payment.
6. Other transaction costs
Beyond stamp duty and registration, expect:
- Legal / conveyancing fees: 0.3%–1% of price
- Mortgage processing fee: 0.5%–2% of loan
- Valuation fee: fixed cost, usually small
- Brokerage / agent commission: varies, sometimes paid by buyer
- Title search / property survey: fixed cost
- GST (India): 5% on under-construction properties
7. Common mistakes
- Forgetting about stamp duty when budgeting. It's often the largest single upfront cost — bigger than the down payment in some cases.
- Underestimating transaction costs. Budget 6%–15% of the property price for all fees combined.
- Not checking first-time buyer rules. The savings can be worth tens of thousands.
- Assuming rates are the same everywhere. Stamp duty varies hugely by state and country — often by 3%–5%.
- Confusing stamp duty with registration. They're separate in most markets — both must be paid.
- Buying without understanding the full cost. The property price is only one part.
8. How to use this calculator
- Pick your country and state/region — rates auto-adjust.
- Enter the property price.
- Choose your buyer type (first-time, standard, additional property).
- Choose property status (ready-to-move vs under-construction for GST).
- Adjust registration, GST, legal, and other fees if needed.
- See the total transaction cost, effective rate, and a full breakdown.
9. Final thoughts
Stamp duty is unavoidable for most property purchases — but it's also the most
commonly underestimated cost. Understanding it early in your search helps you
plan realistically, budget for the right total, and avoid surprises at closing.
Use this calculator as a starting point. Then verify the exact rates with your
state revenue department or solicitor before you commit.