Mortgage do's and don'ts: protect your loan from contract to keys

Most loans that fall apart late don’t fall apart because of the house. They fall apart because something in the buyer’s financial picture changed between approval and closing — usually something that felt completely harmless at the time. Your loan is approved based on a snapshot of your finances; your job for the next 30–45 days is to keep the picture matching the snapshot.

The don’ts

Don’t open new credit. No new credit cards, no store financing for the furniture that would look perfect in the new place, no new car — even if your payment “barely changes.” New accounts change your debt-to-income ratio and your credit profile, both of which get re-checked before closing.

Don’t change jobs without a conversation first. Sometimes a job change is fine; sometimes it stalls everything. The difference depends on timing, pay structure, and industry — so loop in your lender before you accept the offer, not after.

Don’t move money around undocumented. Large transfers between accounts, big cash deposits, or a sudden gift from family all require a paper trail. Gifts are usually fine — there’s a simple gift-letter process — but surprise money with no explanation is a problem. When in doubt, ask before you move it.

Don’t co-sign for anyone. Co-signing a loan makes that debt yours in the eyes of underwriting, even if you never make a payment on it.

Don’t miss any payments. A single late payment during the process can change your approval. Autopay everything.

The do’s

Do respond to document requests fast. This is the single biggest thing in your control. When your lender asks for a pay stub or a statement page, same-day turnaround keeps your file at the top of the pile and your closing date safe.

Do keep records of everything. Save every statement, pay stub, and tax document where you can find it in two minutes. Underwriting often asks for the same document twice with slightly different requirements — calm people have a folder.

Do keep paying rent and all existing bills exactly as normal until the day you close.

Do ask questions. There is no dumb question during a mortgage. The buyers who ask early avoid the problems that are expensive to fix late. If something feels off or confusing, that feeling is information — say something.

The principle behind all of it

Underwriting isn’t trying to trick you; it’s verifying that the person who closes is the same financial person who applied. Stay boring for 45 days. Boring closes on time.

In the process now, or about to be? Reach out and I’ll make sure you know exactly what’s coming next.