About the Closing Costs Calculator
People budget for the deposit. They need the deposit plus closing costs, and the gap regularly runs to five figures.
A 10% deposit on a £320,000 property is £32,000. The cash you actually need on completion day is £44,580 — nearly 14% of the price rather than 10%. That £12,580 difference is not a detail; it is the reason purchases fall through.
This calculator gives you the whole figure, itemised, and separates two things that get carelessly lumped together: fees you are paying to buy, and money you would have owed anyway that is simply collected early.
How to Use the Closing Costs Calculator
Enter the price and your deposit.
Then the percentage fees: origination (charged on the loan, not the price), title insurance and transfer tax or stamp duty. The last of these varies enormously by jurisdiction and is often banded rather than flat, so treat the result as an estimate and check your local rules.
Fixed fees covers the survey, searches, legal work, registration and appraisal — everything that costs roughly the same whatever you buy.
Finally the prepaid items: property tax, how many months of it your lender collects up front, and the insurance you pay on the day.
If the seller or lender is contributing, put it in the credit field.
Why "Budget 3%" Is the Wrong Rule
Closing costs are a mix of two completely different kinds of charge, and the mix is what makes percentage rules of thumb unreliable.
Fees that scale. Origination on the loan, title insurance and transfer tax all move with the size of the transaction.
Fees that do not. A survey costs what a survey costs. Searches, registration and legal work are much the same on a £150,000 flat and a £700,000 house.
Because a fixed lump sits inside the total, closing costs are a larger share of a cheap property than an expensive one:
| Price | Closing costs | Share of price |
|---|---|---|
| 150,000 | 8,500.00 | 5.67% |
| 320,000 | 12,580.00 | 3.93% |
| 700,000 | 21,700.00 | 3.10% |
The rule of thumb is close to right at the cheap end and overstated at the expensive end. If you are buying at the bottom of a market, budget more than the percentage you were quoted, not less.
Fees Against Prepaid Items
Of the £12,580 in the example, £10,480 is fees and £2,100 is prepaid property tax and insurance.
That second figure is cash you need on the day, so it belongs in the total. But it is not a cost of buying. It is three months of property tax and a year of insurance — bills you would have paid regardless, brought forward and held in escrow.
Counting them as the cost of the transaction overstates what buying costs you by about a fifth. This calculator reports both and keeps them apart, because the two numbers answer different questions:
- How much cash do I need on the day? Everything: £12,580.
- What is this transaction costing me? The fees: £10,480.
Step-by-Step Example
£320,000 property, £32,000 deposit.
Loan: 320,000 − 32,000 = 288,000
Fees that scale:
Origination 1% × 288,000 (the loan) = 2,880.00
Title ins. 0.5% × 320,000 = 1,600.00
Transfer tax 1% × 320,000 = 3,200.00
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7,680.00
Fees that do not:
Survey, searches, legal, registration = 2,800.00
Prepaid:
Property tax 3 × (3,600 ÷ 12) = 900.00
Insurance one year = 1,200.00
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2,100.00
Closing costs 12,580.00
Deposit 32,000.00
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Cash needed on the day 44,580.00Note that origination is charged on the loan, so a larger deposit reduces it — one of the few places where putting more down cuts a fee directly rather than just reducing what you borrow.
What a Seller Credit Is Worth
A credit reduces the cash you need pound for pound. £5,000 takes the figure from £44,580 to £39,580.
There is a ceiling, though. A credit larger than your actual closing costs is not normally paid out to you as cash — it just goes unused. So negotiating a £15,000 credit against £12,580 of costs gets you £12,580 of benefit, not £15,000. If the seller is willing to go that far, a price reduction may be worth more.
Understanding Your Result
Cash needed at closing is the number that matters. Deposit plus everything else.
Closing costs is that total without the deposit, and its share of the price — useful for sanity-checking against what you have been quoted.
What it is made of is the itemisation.
Fees against prepaid splits the total into what buying costs you and what you would have owed anyway.
Worth knowing explains how the percentage behaves at other price points, which is the part most estimates get wrong.
When Should You Use This Calculator?
Before making an offer. Knowing the full cash requirement stops you committing to a deposit you can fund and a completion you cannot.
While saving. The deposit calculator tells you when you will have the deposit. This tells you how much more you need on top.
Comparing two properties at different prices. The percentage is not the same on both, and the cheaper one carries proportionally more.
Negotiating a seller contribution. The ceiling above is worth knowing before you ask.
Checking a lender's estimate. If theirs differs substantially from this, the gap is usually transfer tax banding, escrow requirements, or fees this page does not know about — and it is worth asking which.
Common Mistakes
Budgeting only the deposit. The single most common and most expensive mistake on this page.
Applying a flat percentage. It overstates at the top of the market and understates at the bottom.
Treating prepaid tax as a cost of buying. It is not; it is timing.
Forgetting that origination is on the loan. A bigger deposit shrinks it directly.
Assuming transfer tax is a flat rate. In many places it is banded, so a small change in price can cross a threshold and change the bill sharply. Check your local rates rather than relying on a single percentage.
Expecting an oversized credit to be paid out. It will not be.
Leaving nothing for after completion. Moving costs, immediate repairs and furnishing all land in the same month, and none of them appear here.
Reading this as a quote. These are typical figures. Your lender must give you a written estimate — get it, and compare it against this rather than the other way round.