What is a mortgage pre-approval?

A pre-approval is a lender’s written commitment to lend you up to a specific amount, based on verified income, assets, credit and debts. It happens before you shop for a home, is typically valid 60–90 days, and the letter that comes with it tells sellers your financing is real — which is why many listing agents require one with an offer.

What is the difference between pre-approval and pre-qualification?

Pre-qualification is a rough estimate from numbers you report yourself; pre-approval verifies those numbers with documents and a hard credit check. Sellers take pre-approvals seriously because the lender has actually reviewed your finances, while a pre-qualification carries no commitment and little weight.

How long does a mortgage pre-approval take, and how long does it last?

Most lenders decide within 1–3 business days of receiving your full document package , and the letter is typically good for 60–90 days. If it expires, you can usually renew with updated pay stubs and bank statements plus a fresh credit pull.

Does getting pre-approved hurt my credit score?

Barely — and rate-shopping is protected. The hard inquiry typically costs a few points for a short time, and the CFPB confirms multiple mortgage inquiries within a 45-day window count as a single inquiry. Avoid opening other new credit meanwhile, since those count separately.

Why would a lender deny my pre-approval — and can I fix it?

The most common reasons are a credit score below the program minimum, too much debt relative to income, and a recent job change. Ask for the denial reason in writing; most are fixable in 30–90 days by paying down balances, disputing report errors, or building stable income history — then reapply.

Home buying

Mortgage Pre Approval: What Happens, What You Need, and How Long It Lasts

A mortgage pre approval is the moment house-hunting stops being window shopping. Before you tour a single home, a lender reviews your income, credit and debts and commits — in writing — to lend you up to a specific amount. That letter is what turns your offer from a hopeful bid into something a seller can bank on. Here is the full process, the exact paperwork lenders ask for, how long the letter lasts, and what to do if the answer comes back no.

MKD Editorial Team October 14, 2026 6 min read Figures checked 14 Oct 2026

Flat fintech illustration in deep teal and gold: a mortgage approval letter with a large gold circular stamp seal, a house key lying beside the document, a small house silhouette with a teal roof, on a pale cream background. — The pre-approval letter: a lender’s written commitment, before you tour.

Key takeaways

Mortgage pre-approval is a lender’s written commitment to lend a specific amount, based on verified income, credit and assets. Pre-qualification is only an estimate.
Bring pay stubs, W-2s or 1099s, tax returns, 2–3 months of bank statements, photo ID and debt statements.
Most pre-approvals last 60–90 days and can be renewed with fresh documents.
Multiple mortgage inquiries within a 45-day window count as a single inquiry (CFPB) — shop several lenders without fear.
Top denial reasons: low credit, high debt-to-income, recent job changes — most fixable in 30–90 days.

What mortgage pre-approval actually is

Pre-approval happens before you find a house. You apply to a lender, hand over your financial life on paper, and the underwriting team verifies it — then issues a letter stating the loan amount, program and rate type you qualify for (the CFPB’s explainer). It is not the final loan approval — the property still needs an appraisal and a final underwriting pass — but it is a real commitment, not a guess. In a competitive market, an offer backed by that letter signals the financing is already vetted; many listing agents will not present an offer without one.

Pre-approval vs pre-qualification: the comparison

The two terms sound interchangeable, but lenders and sellers treat them very differently:

	Pre-qualification	Pre-approval
What it is	Estimate from self-reported numbers	Verified commitment after document review
Credit check	Soft pull, or none	Hard inquiry
Documents	None required	Full checklist (below)
Seller weight	Little	High — financing is vetted
Time	Minutes, online or by phone	1–3 business days

A “3-minute pre-qualification” is a starting estimate only — the pre-approval is what strengthens an offer.

The documents checklist

Gather these before you apply and the process moves fast:

Income: two most recent pay stubs; W-2s for the last two years; 1099s if you do contract or freelance work; last two years of tax returns.
Assets: two to three months of bank statements (all pages); investment and retirement account statements; a gift letter if family is helping with the down payment.
Debts: statements for credit cards, auto loans, student loans and any child-support or alimony obligations.
Identity: government photo ID and your Social Security number for the credit pull.

Self-employed? Expect profit-and-loss statements and possibly two years of business returns — lenders average variable income and discount what they cannot document. Commission and bonus income generally needs a two-year history to count in full.

Flat fintech illustration in deep teal and gold: a checklist document with gold checkmarks, pay stub papers and a briefcase beside it, a magnifying glass hovering over the papers, a house outline in the background, on a pale cream background. — Four piles of paperwork: identity, income, assets, debts. Have them ready before you apply.

How long it takes — and how long it lasts

With a complete package, most lenders decide in 1–3 business days. The letter is typically valid for 60–90 days (the CFPB on pre-approval duration). House-hunting often takes longer, so expect to renew: fresh pay stubs, updated bank statements and a new credit pull — not a full re-application.

Two things can change the number on a renewal: market rates, and your finances. A new car loan, a job switch or a big credit-card balance means the lender re-runs everything. Keep your financial life boring between pre-approval and closing; see our closing-timeline guide for what happens after the offer is accepted.

The credit question: hard inquiries and the 45-day window

Pre-approval needs a hard credit pull; one inquiry typically costs a few points briefly. But rate-shopping is protected: the CFPB confirms that multiple mortgage inquiries within a 45-day window are recorded as a single inquiry, because scoring models understand you are buying one home, not ten (the CFPB’s credit-check explainer). Compress your lender shopping into a few weeks and get several pre-approvals — the credit impact is the same as applying once.

What does hurt is opening other new credit mid-process: a car loan or a new credit card counts as a separate inquiry and can shift your debt-to-income ratio enough to shrink the approval.

Why sellers take pre-approved offers more seriously

A pre-approval letter answers the seller’s biggest fear: can this buyer actually close? In multiple-offer situations, a pre-approved bid routinely beats a higher one that is not.

It also keeps you honest about budget. A $360,000 loan at the 7.28% benchmark costs about $2,463 a month in principal and interest alone — before taxes, insurance and PMI. That is the kind of number a pre-approval forces you to confront early instead of at the closing table. For the full affordability picture, see our home affordability guide (or the $80k salary walkthrough), and keep the financing contingency in your offer as a backstop.

Common denial reasons — and how to fix them

Credit score below the program minimum. Pull your reports, dispute errors, and pay down revolving balances — utilization is the fastest lever. Even 20–30 points can unlock a better program.
Debt-to-income ratio too high. Paying off a small loan entirely removes its payment from the ratio; merely paying it down does not.
Recent job change or income drop. Lenders want roughly two years of stable, documentable income. A field change or a switch to commission can reset the clock.
Debts you did not disclose. The credit pull finds everything. Disclose it all up front; surprises read as risk.
Unexplained bank deposits. Lenders must source the down payment — keep a paper trail for every large transfer.

Denied? Ask the lender for the specific reason in writing. Most of these fixes take 30–90 days, then you reapply with a stronger file.

Try it yourself

Pre-approval tells you what a lender will allow — the mortgage calculator shows what it costs at 7.28%.

Open the mortgage calculator

Sources & further reading

Process, definitions and timing from the federal consumer guides; payment maths is our own at 7.28%.

Consumer Financial Protection Bureau — What Is a Mortgage Pre-Approval?The federal definition of pre-approval and how the process works.
Consumer Financial Protection Bureau — What Is a Mortgage Pre-Qualification?How pre-qualification differs — the basis for the comparison table.
Consumer Financial Protection Bureau — How Long Does a Mortgage Preapproval Last?Typical validity periods and what renewal involves.
Consumer Financial Protection Bureau — What Happens When a Mortgage Lender Checks My Credit?The 45-day rate-shopping window and why comparison shopping barely dents your score.