When you make an offer on a home, a letter from a lender can show the seller that you are likely to get financing. Lenders call that letter a prequalification or a preapproval, and the CFPB notes that they use the two words differently. What the letter is worth depends less on its name than on what the lender checked.
This guide explains what a letter does and does not promise, when you have formally applied and are owed a Loan Estimate, how to shop lenders without piling up credit inquiries, and what can undo an approval before closing. A hypothetical household shows how the most a lender might approve can be more than your budget can carry.
What to know
- The labels vary by lender; ask what was verified and whether your credit was pulled.
- A letter is not a guaranteed loan offer, a Loan Estimate, or a final approval.
- The CFPB says mortgage credit checks within a 45-day window are recorded as a single inquiry, so keep them close together.
- The most a lender may approve can sit far above what your take-home pay supports.
Two names, one question: what did the lender check?
The CFPB says prequalification and preapproval letters both state how much a lender is willing to lend you, up to a certain amount and based on certain assumptions. Some lenders issue a prequalification letter based on unverified information you report and give a preapproval only after verifying it. Other lenders use only one of the names, and the same kind of letter may go by either one. The CFPB’s advice is not to worry about which word a lender uses, because the label tells you little about that lender’s process.
So ask directly. Did the lender pull your credit? Did it review your pay stubs and bank statements, or take your word for them? The CFPB also notes that some lenders respond to these requests with a written commitment to lend up to a specified amount for a certain period, subject to limited conditions. A verified letter gives you a more reliable number to shop with.
The CFPB notes that many people wait to get a preapproval letter until they are ready to shop seriously for a home, but getting preapproved earlier can reveal credit problems in time to correct them. If your letter comes months before you apply, its credit check may fall outside the 45-day window for later lender comparisons (see below), adding one inquiry, which the CFPB says has a small effect.
Sources: CFPB: Prequalification and preapproval letters · CFPB: When a mortgage lender checks your credit
What a letter is not
The CFPB is clear that neither letter is a guaranteed loan offer. The assumptions behind a letter may not survive verification and an appraisal. Nor is a letter a Loan Estimate. Under Regulation Z, if a lender gives you a written estimate of terms or costs specific to you, such as an estimated monthly payment, before the Loan Estimate, it must warn at the top of the first page that your actual rate, payment, and costs could be higher and tell you to get an official Loan Estimate before choosing a loan.
The CFPB says a letter still helps you make an offer because it gives the seller confidence that you can get financing, and suggests asking a local real estate agent or a housing counselor whether your letter will serve that purpose. If a lender evaluates your credit and tells you that you do not qualify for a letter, the CFPB notes it must give you an adverse action notice, a notice that the lender turned you down, even if you never submitted a formal loan application.
Sources: CFPB: Prequalification and preapproval letters · CFPB: Regulation Z § 1026.19(e), Loan Estimate timing and fees
When you have applied: the six pieces of information
For most mortgages, Regulation Z defines an application as six pieces of information: your name, your income, your Social Security number so the lender can obtain a credit report, the property address, an estimate of the property’s value, and the loan amount you want. The official interpretation says a lender may collect more, but once it has those six items, it has an application. Until you name a property, a lender does not have all six, so a letter typically arrives without a Loan Estimate.
An application starts a clock. Under Regulation Z, the lender must deliver or mail a Loan Estimate no later than the third business day after receiving the application. The CFPB notes that you do not need a signed purchase contract or income documents to get one, and that a Loan Estimate is neither an approval nor a denial. Until you receive it and say you intend to proceed, the lender may charge only a reasonable credit report fee, not application, appraisal, or underwriting fees.
| Stage | What the lender has checked | Credit report | What you receive |
|---|---|---|---|
| Prequalification letter | At some lenders, only what you report | May be pulled; ask | An amount based on assumptions; not a guaranteed loan offer |
| Preapproval letter | At some lenders, verified documents | May be pulled; ask | An amount based on assumptions; not a guaranteed loan offer |
| Loan Estimate | The six application items; no documents required | Your Social Security number is collected to pull one | A standard three-page form within three business days; not an approval or a denial |
| Final approval | Documents verifying what you reported, usually plus an appraisal | Reviewed; for Fannie Mae loans, updated if over four months old at closing | Approval to close, then the Closing Disclosure at least three business days before closing |
Sources: CFPB: Regulation Z § 1026.2(a)(3), definition of application · CFPB: Information needed for a Loan Estimate · CFPB: Regulation Z § 1026.19(e), Loan Estimate timing and fees · CFPB: What is a Loan Estimate? · CFPB: Documents and lender requests · CFPB: What is a Closing Disclosure? · Fannie Mae Selling Guide: Allowable age of credit documents · CFPB: When the appraisal is less than the sale price
Shopping several lenders without piling up inquiries
The CFPB says a credit check from a lender is reported as an inquiry, which typically has a small negative effect on your credit scores. But according to the CFPB, multiple credit checks from mortgage lenders within a 45-day window are recorded on your credit report as a single inquiry, as long as the last check falls within 45 days of the first.
Plan the timing so lenders’ credit checks fall close together, inside one window. The CFPB adds that shopping is usually still worth it even if a lender checks your credit after the window, because one more inquiry has a small effect and shopping around can save a lot of money. Checking your own credit reports and scores does not affect your scores.
The documents lenders ask for
The CFPB’s application packet checklist lists what to gather: pay stubs for the last 30 days, W-2 forms and signed federal tax returns for the last two years, records of any other income, your two most recent bank statements, and statements showing the source of your down payment with at least two months of ownership history. Add proof of identity and your Social Security number. If part of the down payment is a gift, the CFPB suggests a signed statement from the giver saying so.
Once you choose a lender, expect requests to verify what you reported. The CFPB notes that lenders are generally required to verify the source of your income and down payment funds, so be ready to explain large deposits, and that some loans do not allow gift funds for the down payment. Self-employed borrowers may need more documentation. Send complete copies, keep the originals, and answer requests quickly.
Sources: CFPB: Create a loan application packet · CFPB: Documents and lender requests
The letter amount is a ceiling, not a budget
A letter’s amount reflects the lender’s limits, not your household’s. Lenders compare all your monthly debt payments, including the new housing payment, with your gross monthly income, and the CFPB notes that the maximum debt-to-income ratio varies by loan product and lender. Your budget runs on take-home pay after taxes, savings, and everyday spending, so a mortgage budget built from your own numbers can land lower.
Take a hypothetical household earning $8,500 a month before taxes, with $625 of other debt payments and $6,400 of take-home pay. At an illustrative 45% ceiling, total debt payments could reach $3,825.00, leaving $3,200.00 for housing. With $35,000 down on a 30-year fixed loan at a hypothetical 6.875% and the table’s tax and insurance assumptions, that supports a price of about $409,407. After $3,430 of spending and savings and the $625 of debts, take-home pay leaves $2,345.00 for housing, which supports about $302,344: a home $107,063 less expensive and a payment $855.00 a month lower. The $3,200.00 payment would take 50.0% of take-home pay.
| Figure | Lender ceiling of 45% | Take-home budget |
|---|---|---|
| All monthly debt payments, including housing | $3,825.00 | $2,970.00 |
| Monthly housing payment after $625 of other debts | $3,200.00 | $2,345.00 |
| Loan amount | $374,407 | $267,344 |
| Estimated home price | $409,407 | $302,344 |
Sources: CFPB: Debt-to-income ratio
What can undo an approval before closing
A letter, and even a Loan Estimate, rests on the facts at the time. The CFPB names four changes that can alter your terms, even a locked rate: a different loan type or down payment, an appraisal that differs from what was expected, a new loan or missed payment that changes your credit, and income the lender cannot document. It also advises against applying for other credit right before or during the mortgage process.
Your job gets a late check too. For loans it buys, Fannie Mae’s Selling Guide generally has lenders confirm employment within 10 business days before the note date (120 calendar days for self-employment income), and a change in employment must be fully reevaluated. The note date is the date on the loan note you sign at closing. If the appraisal comes in below the price, the CFPB calls buying for more than the appraised value very risky and suggests asking the seller to reduce the price; if the seller will not, you may want to cancel, and the CFPB suggests consulting an attorney, since your contract may carry cancellation costs.
Rates move as well. The CFPB notes that an unlocked rate can change at any time. In the example, if the rate on the $374,407 loan rose from 6.875% to 7.375% before you locked, principal and interest would rise by $126.35 a month and total debt payments would reach 46.5% of gross income, above the 45% ceiling. At the higher rate, the same ceiling supports about $394,227, or $15,180 less.
Sources: CFPB: Which Loan Estimate costs can change · CFPB: Mortgage rate locks · CFPB: When a mortgage lender checks your credit · Fannie Mae Selling Guide: Verbal verification of employment · CFPB: When the appraisal is less than the sale price
How long a letter lasts
The CFPB’s guidance does not set a standard life for a prequalification or preapproval letter; it notes only that a written commitment may be valid for a certain period of time. Ask how long your letter is valid and what the lender will need if your search runs longer.
The paperwork behind a letter ages. For loans Fannie Mae buys, its Selling Guide says credit documents, including credit reports and income, employment, and asset records, must be no more than four months old on the note date, and older ones must be updated. A rate lock is a separate clock: the CFPB says locks are typically available for 30, 45, or 60 days and may be expensive to extend.
Sources: CFPB: Prequalification and preapproval letters · Fannie Mae Selling Guide: Allowable age of credit documents · CFPB: Mortgage rate locks
Put the letter next to your budget
Before you tour homes, write down two numbers: the most a lender says it may lend, and the housing payment your take-home pay supports after debts, spending, and savings. In the example, the 45% ceiling supports about $409,407, while the take-home budget supports about $302,344. Use the lower figure as your shopping ceiling, ask each lender what it verified and how long its letter lasts, and tell your lender early about any change in your job or debts.
Your next-step checklist
- Ask each lender what it verified and whether it pulled your credit.
- Ask how long the letter is valid and what would require an update.
- Gather pay stubs, W-2s, tax returns, bank statements, and down payment records.
- Keep lenders’ credit checks close together, well inside the CFPB’s 45-day window.
- Set your housing payment from take-home pay before you set a price.
- Hold off on new credit until after closing, and report any job change early.
Sources & further reading
CFPB: Prequalification and preapproval letters CFPB: Regulation Z § 1026.19(e), Loan Estimate timing and fees CFPB: Regulation Z § 1026.2(a)(3), definition of application CFPB: Information needed for a Loan Estimate CFPB: What is a Loan Estimate? CFPB: Documents and lender requests CFPB: What is a Closing Disclosure? Fannie Mae Selling Guide: Allowable age of credit documents CFPB: When a mortgage lender checks your credit CFPB: Create a loan application packet CFPB: Debt-to-income ratio CFPB: Which Loan Estimate costs can change CFPB: Mortgage rate locks Fannie Mae Selling Guide: Verbal verification of employment CFPB: When the appraisal is less than the sale priceEducational information, not individualized financial, legal, or tax advice. Examples are hypothetical. Verify current terms directly with the provider.



