OverPayWise

Mortgage planning tools

Free stamp duty calculator

Estimate stamp duty and upfront home-buying costs.

Calculate England and Northern Ireland residential SDLT, then add common buying costs such as legal fees, survey fees, mortgage fees, and moving costs.

England and Northern Ireland

Uses residential SDLT bands, first-time buyer relief, additional property surcharge, and non-UK resident surcharge.

Estimated stamp duty

£7,500

Estimated cash required: £81,899

Inputs

Purchase details

Optional buying cost estimates

Add likely conveyancing, survey, lender, and moving costs to estimate the cash needed before completion.

How should buying costs affect your mortgage assumptions?

Keep the deposit going into the property separate from cash for SDLT, legal fees, survey fees, mortgage fees, and moving costs. Choose how to carry the next mortgage comparison forward.

Estimate

Purchase cost summary

Stamp duty

£7,500

Effective SDLT rate: 2.14%

Total upfront costs

£11,899

Estimated cash required

£81,899

Purchase cost including SDLT and fees

£361,899

Result interpretation

What your buying-cost estimate may suggest

What it means
This may suggest the SDLT and upfront cash to plan for before completion, based on the buyer type and cost estimates entered.
Number that matters most
Estimated cash required matters most because it combines the deposit, SDLT, and entered buying costs into one planning figure.
Be careful about
SDLT can depend on reliefs, residency, ownership, transaction structure, and location. A conveyancer or tax adviser can help confirm the final amount.
Explore next
You may want to compare affordability and mortgage deals after checking whether the upfront cash figure still leaves enough emergency savings.

Buying-cost funding choice

What changed before mortgage comparison

Your mortgage amount and property deposit stay aligned with the previous step; buying costs are treated as extra cash needed before completion.

Deposit allocated to property
£70,000
Cash treated as the mortgage deposit for the property value.
Cash available for buying costs
£11,899
Cash shown separately from the property deposit.
Total cash contribution
£81,899
Deposit plus any separate cash used for buying costs.
Mortgage amount carried forward
£280,000
Used in the mortgage comparison if you continue.

Use these numbers next

Carry this estimate into the next step.

Use these figures to decide whether your deposit, buying-cost cash, and mortgage amount still look realistic before comparing mortgage deals.

Continue to compare deals
Property deposit carried forward
£70,000
The deposit allocated to the property purchase in the next calculator.
Cash for buying costs
£11,899
Shown separately from the property deposit so costs are not hidden inside the mortgage assumption.
Mortgage amount
£280,000
The borrowing amount that will be prefilled in the mortgage comparison step.
Total buying costs
£11,899
Stamp duty plus the legal, survey, mortgage, and moving costs entered.

Confidence check

First-time buyer confidence checklist

Use this checklist to spot planning gaps before you move from calculator estimates to conversations with lenders, brokers, or conveyancers. This is educational only and is not financial advice.

  • Have you allowed for a cash buffer?

    Keep emergency savings separate from the deposit and completion costs before treating a purchase budget as comfortable.

    Review buying costs
  • Have you considered moving costs?

    Budget for removals, legal work, surveys, mortgage fees, insurance, utilities, and immediate setup costs after completion.

    Check upfront cost maths
  • Do you need an Agreement in Principle?

    An Agreement in Principle can help you understand whether a lender may consider your application before you make an offer.

    Plan your mortgage steps
  • Have you checked lender eligibility?

    Income, credit history, deposit source, employment type, property type, and existing commitments can all affect lender decisions.

    Understand affordability
  • Are your assumptions realistic?

    Sense-check the property value, deposit, mortgage amount, rate, fees, term, and monthly payment against current quotes before relying on the estimate.

    Review comparison assumptions

Learn the stamp duty maths

Calculate SDLT band by band

Follow a plain-English lesson covering SDLT bands, first-time buyer relief, additional property rules, worked examples, and practice questions.

Open the stamp duty lesson

Key terms

Deposit, buying costs and mortgage amount

Deposit

The cash put towards the property value. It is separate from stamp duty, legal fees, survey fees, and moving costs.

Buying costs

Extra upfront costs needed around completion. They can reduce the cash left for deposit if all money comes from one savings pot.

Mortgage amount

The amount borrowed from the lender. It is usually property value minus the deposit used for the mortgage.

Cost breakdown

What cash you may need before completion

The cash required estimate combines your deposit, stamp duty, and optional buying cost estimates. Mortgage fees may sometimes be added to the mortgage instead, so treat this as a planning view.

Stamp duty

£7,500

Total upfront costs

£11,899

Estimated cash required

£81,899

Property deposit

£70,000

85.47% of estimated cash required

Stamp duty

£7,500

9.16% of estimated cash required

Legal fees

£1,500

1.83% of estimated cash required

Survey fees

£700

0.85% of estimated cash required

Mortgage fees

£999

1.22% of estimated cash required

Moving costs

£1,200

1.47% of estimated cash required

SDLT bands

How the stamp duty estimate is built

BandTaxable amountRateTax
Up to 125,000£125,0000%£0
125,001 to 250,000£125,0002%£2,500
250,001 to 925,000£100,0005%£5,000

Trust and methodology

How this stamp duty estimate is checked

Rates last reviewed: 12 June 2026. This UK-focused calculator uses the England and Northern Ireland residential SDLT structure shown on GOV.UK, then adds your optional buying cost estimates for cash planning.

Check official government guidance

Educational estimate only

Use this as a planning check, not a tax decision. GOV.UK, HMRC, your conveyancer, or a qualified tax adviser can confirm the final SDLT position for your purchase.

Regions supported

England and Northern Ireland SDLT. Scotland and Wales have separate devolved property taxes and different bands.

Calculation method

The property price is split into bands. Each slice is taxed at its band rate, then applicable surcharges are added.

Assumptions used

Optional fees and moving costs are cash-planning estimates. They do not change the SDLT bands or tax due.

Methodology section
  1. Start with the purchase price entered as the residential chargeable amount.
  2. Choose the standard SDLT bands, or first-time buyer relief bands when the first-time buyer option is selected and the price is not above GBP500,000.
  3. Apply SDLT progressively to each slice of the price, so each band is taxed only on the portion that falls inside that band.
  4. Add the additional-property surcharge and non-UK resident surcharge to each taxable band when those options apply.
  5. Add the optional legal, survey, mortgage, and moving cost estimates to show wider upfront cash planning.
Methodology update process
  1. Check GOV.UK and HMRC residential SDLT guidance before changing displayed rates or relief thresholds.
  2. Update the SDLT calculation bands, tests, and this review date in the same change.
  3. Run calculator tests, build verification, and smoke coverage before publishing the updated methodology.
Assumptions and limitations
  • The calculator covers residential purchases in England and Northern Ireland only.
  • Scotland uses Land and Buildings Transaction Tax, and Wales uses Land Transaction Tax.
  • The property price is treated as the SDLT consideration. Complex consideration, linked transactions, shared ownership, lease rent, companies, trusts, and special reliefs are not modelled.
  • Optional buying costs are user-entered planning estimates and are not part of the SDLT tax calculation.

FAQ

Stamp duty questions

Does this stamp duty calculator cover the whole UK?

No. It estimates residential Stamp Duty Land Tax for England and Northern Ireland. Scotland uses Land and Buildings Transaction Tax, and Wales uses Land Transaction Tax.

Are legal, survey, mortgage, and moving costs required?

No. They are optional estimates to help you plan upfront cash. You can set any of them to zero if they do not apply or if you want to calculate SDLT only.

What does estimated cash required mean?

Estimated cash required is your deposit plus estimated stamp duty and the optional buying cost estimates you enter. It is a planning figure, not a lender or solicitor quote.

Can mortgage fees be added to the mortgage instead?

Some product fees can be paid upfront or added to the mortgage, depending on the lender and deal. If a fee will be added to the mortgage, you can reduce or remove it from the upfront cost estimate.

Does the calculator include every stamp duty relief or edge case?

No. It is designed for common residential purchases and does not cover every relief, linked transaction, company purchase, trust, leasehold calculation, or mixed-use property scenario.

Recommended next steps

What to check next

A short follow-up can help put this estimate into context before you make a money decision.

Important disclaimer

This calculator estimates residential Stamp Duty Land Tax for England and Northern Ireland only. It does not cover Scotland, Wales, mixed-use property, companies, trusts, shared ownership, linked transactions, leasehold rent calculations, exemptions, or every relief. Always check GOV.UK, HMRC, your conveyancer, or a qualified tax adviser before relying on a final figure.

Review the OverPayWise methodology and editorial standards

Learn This Calculation

Understand the lesson behind Stamp Duty Calculator.

Use the education page before relying on the result. It explains the assumptions, shows the maths, gives worked examples, and includes practice questions so the estimate is easier to check.

Tutorial

Use the SDLT tutorial to understand tax bands before relying on an upfront-cost estimate.

Maths lesson

Covers progressive stamp duty bands, first-time buyer relief, additional-property surcharges, and upfront cash.

Worked examples

Works through standard, first-time buyer, and additional-property purchase examples.

Practice questions

Practise splitting a property price across SDLT bands and adding the result to deposit cash.

Next Lesson

Compare mortgage deals

Once buying costs are visible, compare product fees, rates, and follow-on costs.

OverPayWise provides educational estimates only. It is not FCA authorised, does not provide regulated financial advice, and does not arrange mortgages.