Updated October 2026 · Fraser Bond
Buying · Mortgages
Using cash for your mortgage deposit
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In short: Lenders and solicitors must check where your deposit came from under anti-money laundering rules. Cash kept at home is the hardest to prove, so bank it early and keep records showing how you built it up, such as payslips, business records or sale receipts. Savings built up in a bank account over time are easiest. Gifted deposits are common but need a signed gift letter and ID from the giver. Start early, because unexplained cash can delay or stop a purchase.
Deposit and loan-to-value
Deposit percentage–
Mortgage needed–
Loan-to-value–
Better rates are usually available at lower loan-to-value bands.
| Source of deposit | Evidence usually needed |
|---|---|
| Savings | Bank statements showing the build-up |
| Gift from family | Gift letter, giver's ID and their bank statements |
| Sale of a property | Completion statement |
| Inheritance | Probate documents or estate accounts |
| Cash | Records showing where it came from; bank it well in advance |
Proving where your deposit came from
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Frequently asked questions
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Can I use cash for a house deposit?
Yes, but you must prove where it came from, and lenders may be cautious about large cash sums.
How much deposit do I need?
Often at least 5–10% for a home, and more for buy-to-let.
Can family gift my deposit?
Yes, with a gift letter confirming it isn't a loan.
