A home deposit paid before mortgage approval puts your cash at risk if the final loan is smaller than expected. A quote or preapproval helps you plan, but it is not the same as money ready for the purchase deadline. Before paying, check the funding gap, written contract conditions, payment recipient and a fallback you can actually afford.
This guide develops a general planning question from a published Korean Money & Why discussion. It does not carry Korean contract rules into other countries. The example is fictional, uses one imaginary currency, and is not a loan offer or personal legal advice. Local contracts and laws decide what happens to a deposit.
Home deposit: how a loan shortfall appears
Imagine a home price of 300 units. The buyer has 100 units in cash and hopes for a 200-unit mortgage. They pay a 30-unit deposit from that cash. The final lender offer is only 170 units, and other purchase costs are 10 units.
The full need is 300 + 10 = 310 units. Available funds are 100 + 170 = 270 units, counting the deposit within the original 100, not twice. The shortfall is 40 units. Equivalently, after the deposit, 270 units of price and 10 of other costs remain, while only 70 cash plus 170 loan remains. That is still a 40-unit gap. A preapproval cannot make that gap disappear.
Four ways to protect the deposit and the purchase plan
1. Wait for firmer financing before committing cash
Fits: You have not signed or paid and can still change the timetable. Act: Ask the lender what its estimate assumes, what documents and property checks remain, and when a final decision and funds could be available. Keep the deposit money liquid. Check: The lender’s written amount, conditions, expiry date and likely closing costs. Limit: Even an advanced approval may still have conditions; the seller may not accept a delay.
2. Negotiate a written financing condition
Fits: You need to sign before funding is final and the seller is willing to discuss terms. Act: Have a qualified local professional review the proposed contract before signing. Ask what happens if the loan is refused or approved below the amount you need, how and when notice must be given, and whether any deposit can be returned. Check: The exact wording, evidence required, deadlines and local law. Limit: A conversation, informal promise or clause name alone does not establish a right to recover money. The parties may not agree to the condition.
3. Make the payment traceable and verify the recipient
Fits: A deposit is required after you have checked the contract. Act: Confirm the recipient and payment instructions through an independently verified channel, not only an email or message asking you to change account details. Keep the signed contract, invoice or receipt, transfer record and dates together. Check: Who is authorised to receive funds and whether local practice uses an escrow service, conveyancer, lawyer or another arrangement. Limit: A perfect paper trail helps prove what was paid but does not itself guarantee a refund.
4. Recalculate, renegotiate or stop
Fits: The approved loan comes back too small or the total costs rise. Act: Rebuild the cash-to-close calculation with the lender’s actual figure and every due date. Ask whether a lower price, more time, a different suitable lender or a smaller purchase is realistic. If not, seek local advice promptly about the contract and consider stepping back. Check: Any revised lending terms, application time, fees, emergency cash left after closing and deposit consequences. Limit: A seller need not renegotiate, another lender may also decline, and new high-cost borrowing can make the overall plan less affordable or affect underwriting. Do not hide new debt from the lender.
Before you send a home deposit
- Separate an early loan estimate from final funding and note every remaining condition.
- Add the price, other costs and cash reserve; subtract cash and the loan amount actually offered.
- Read the signed financing and deposit terms with a local professional, including dates and notice rules.
- Independently verify payment instructions and save proof of payment.
- Decide in advance how large a shortfall you could safely cover—and when you would stop.
Bottom line: The useful question is not “Did a lender sound positive?” but “Can I fund the whole purchase on time, and what does my actual contract say if I cannot?” A cautious pause before paying is often easier to manage than an unexplained funding gap after paying.
Sources and scope
The U.S. Consumer Financial Protection Bureau explains that a preapproval letter is not a guaranteed loan offer, describes financing contingencies during home buying, and defines earnest money. These are U.S. illustrations of planning risks, not rules that apply in every country. Verify local lending and contract rules before acting.