Key takeaways:
- A prequalification estimates what you might borrow from numbers you report yourself, while a preapproval is a lender’s review of information it has verified, and because lenders apply both words inconsistently, what the lender actually did matters more than the label on the letter.
- Get a preapproval if you’re touring homes or making offers, and a prequalification if you’re still setting a budget. No federal rule requires a preapproval to tour a home; that’s your agent’s or the listing agent’s practice.
- Checking with several lenders inside a 45-day window generally counts as a single credit inquiry. Tomo Mortgage’s preapproval uses a soft credit check, with a hard inquiry coming later, at full application.
- A preapproval letter estimates how much a lender lets you borrow, based on an initial look at your credit and finances. It isn’t standardized and doesn’t lock in terms. A loan estimate is the standardized federal disclosure of your actual rate, monthly payment and closing costs. Lenders must send it within three business days of receiving your full application, and it’s the document to use when comparing lenders.
If your agent asked for a preapproval, a prequalification isn’t the same document and won’t do the same job. The harder part is that lenders don’t apply those two words consistently, so what’s printed at the top of the letter tells you less than you’d think.
The Consumer Financial Protection Bureau says it outright: lenders use the two terms differently, and the words they choose don’t tell you much about a particular lender’s process, even when there’s a legal difference behind them. So the useful question isn’t which word you need. It’s what the lender behind the letter actually did.
The short answer
A prequalification is based on what you report. A preapproval is based on what a lender checks. Everything else follows from that.
| Prequalification | Preapproval | Underwritten preapproval | |
| Based on | What you tell the lender | Information the lender verifies | Information an underwriter reviews and signs off on |
| What you hand over | Numbers, no paperwork | Pay stub, W-2, bank statements, ID | The same, plus anything the underwriter asks for |
| Typical timing | Minutes | Hours to a few days | Varies by lender |
| Best used for | Setting a budget | Making an offer | Competing against other offers |
Credit checks are their own question, and the answer isn’t always the same.
One question you should ask every lender
“Did you verify my income, assets and credit, and is this letter a commitment for a set period, or an estimate?”
Under Regulation B, a preapproval request counts as a credit application when the lender does a comprehensive analysis of your creditworthiness and issues a written commitment, good for a designated period, up to a specified amount, with conditions limited to things like identifying adequate collateral and no material change in your finances before closing. If a lender’s program doesn’t issue written commitments, the regulation treats its “preapproval” requests as prequalification requests — whatever the letter says.
Most preapproval letters are estimates rather than commitments, and that’s normal. It matters for one practical reason: the number on an estimate can move. Treat it as a ceiling the lender currently sees, not a budget, and certainly not a target. What the letter says you could borrow is not what you have to offer.
Get a preapproval if you’re touring homes. Get a prequalification if you’re still doing math.
If you’re walking through houses, talking to an agent about offers, or watching listings you’d act on, you want a preapproval. Sellers and agents will weigh a verified letter differently than an unverified one.
One common misunderstanding worth clearing up: no federal rule requires a preapproval to tour a home. Since August 17, 2024, agents who are MLS participants under the NAR settlement have had to sign a written buyer agreement with you before touring, and some states have since added their own requirements. That’s the actual rule. A “preapproval first” policy is your agent’s or the listing agent’s practice.
If you’re earlier than that (running numbers, not ready to make an offer) a prequalification or an affordability estimate does the job without the paperwork.
What you’ll actually hand over
For a conventional loan with salaried or hourly income, Fannie Mae’s rules changed on March 4, 2026, effective June 1, 2026: lenders now need only your most recent W-2 and pay stub, rather than two years of W-2s plus a pay stub. Your most recent pay stub has to be dated within 30 days of when you apply and show year-to-date earnings. On top of that, expect to provide recent bank or asset statements, your ID and your Social Security number.
Two caveats. Self-employment, rental income, bonus, commission and several other income types have their own documentation rules and generally require more. And these are the rules Fannie Mae sets – individual lenders can and often do ask for more than the minimum, and FHA and VA loans follow separate handbooks. Ask your lender for their list rather than assuming.
Once we have yours, Tomo Mortgage usually issues a preapproval the same day, often within a few hours.
Does getting preapproved hurt your credit?
Shopping multiple lenders costs less than most people assume.
Within a 45-day window, multiple credit checks from mortgage lenders are recorded on your credit report as a single inquiry, according to the CFPB, which also says plainly that you can shop around and get multiple preapprovals and Loan Estimates.
Two things to do with that. Cluster your applications close together rather than spreading them over months, since not every credit scoring model uses a 45-day window. And ask each lender whether their process uses a hard or soft credit inquiry — this varies by lender and by product, and it’s a fair thing to ask before you authorize anything.
Tomo’s preapproval uses a soft credit check, which doesn’t affect your credit score. A hard inquiry comes later, when you submit a full loan application on a specific home.
You’re not committing to anything
A preapproval doesn’t tie you to a lender, a loan, or a house. Nothing you sign at this stage obligates you to borrow, and you can take a preapproval from one lender and close with another.
It also doesn’t yet produce the disclosure paperwork, for a specific reason. Under the federal rules known as TRID, a lender has your “application” once it has six things: your name, your income, your Social Security number, the property address, an estimate of the property’s value, and the loan amount you want. At that point it has three business days to give you a Loan Estimate — the standardized form showing your interest rate, your annual percentage rate (APR, which folds certain loan costs into a single annualized figure and is therefore usually higher), and your estimated closing costs.
At preapproval you usually don’t have a property address yet. That’s the missing sixth piece, and it’s why a preapproval can feel like a full application while producing no disclosure packet. Submit an address and the clock starts.
One right worth knowing: a lender cannot require you to hand over verifying documents, or anything beyond those six pieces, as a condition of giving you a Loan Estimate.
Separately, federal law now restricts credit bureaus from selling your information to other lenders after a mortgage credit inquiry, with narrow exceptions including lenders you already have a relationship with.
How long the letter is good for
No agency sets an expiration date on a preapproval letter. Lenders set their own, and what drives the range is the paperwork underneath.
Fannie Mae requires credit documents — your credit report, and your employment, income and asset documentation — to be no more than four months old on the note date, and if they’re older, the lender has to update them. FHA caps documents used in origination and underwriting at 120 days old at disbursement, with separate rules for appraisals.
Tomo Mortgage preapproval letters are good for at least four months from your initial preapproval date, and the expiration date is printed on the letter. If it lapses before you’re under contract, we can extend it. That usually means sending updated documents and re-checking your credit — a much smaller job than the first round, and the reason an expired letter doesn’t mean starting over.
What if the answer is no?
If a lender evaluates your creditworthiness and tells you that you don’t qualify for a prequalification or preapproval letter, it has to send you an adverse action notice, even if you never submitted a formal loan application. That notice either states the specific reasons or tells you how to request them — you have 60 days to ask, and the lender has 30 days to answer.
Those reasons are a list of concrete items, not a verdict. Finding out now beats finding out after you’re under contract with earnest money at stake. Lenders also differ in what they can work with, so one answer isn’t every answer.
If you’re touring homes, a preapproval is the next step.
Frequently Asked Questions
Does a Tomo Mortgage preapproval affect my credit score?
No. Tomo’s preapproval uses a soft credit check, which doesn’t affect your score. A hard inquiry comes later, when you submit a full loan application on a specific home. If you’re comparing lenders, multiple mortgage credit checks inside a 45-day window are recorded as a single inquiry, so you can get preapproved with more than one.
My lender calls it a preapproval. Is it actually one?
Ask whether the lender issued a written commitment valid for a set period. Under Regulation B, if a lender’s program doesn’t provide written commitments, its preapproval requests are treated as prequalification requests regardless of what the letter is called.
What documents do I need for a preapproval?
For a conventional loan with salaried or hourly income, Fannie Mae now requires only your most recent W-2 and pay stub, plus asset documentation and ID. The pay stub must be dated within 30 days of application and show year-to-date earnings. Self-employed and variable-income borrowers need more, and individual lenders may ask for more than the minimum.
How long does a preapproval take?
It depends on the lender, from minutes for a prequalification to several days for a full preapproval. Tomo Mortgage usually issues a preapproval the same day, often within a few hours of receiving your documents.
How long is a preapproval letter good for?
No agency sets an expiration date, so lenders set their own. The practical limit is document age: Fannie Mae requires credit documents no more than four months old on the note date, and FHA caps origination documents at 120 days at disbursement. Tomo Mortgage preapproval letters are good for at least four months from your initial preapproval date, with the expiration printed on the letter, and can be extended by sending updated documents and re-checking your credit.
Why didn’t I get a Loan Estimate with my preapproval letter?
Usually because the lender doesn’t have a property address yet. A Loan Estimate is triggered once a lender has all six application elements, and is due within three business days after that.
Can I be denied after being preapproved?
Yes. A preapproval reflects your finances at a point in time. Taking on new debt, changing jobs, or a drop in your credit score can change the outcome, and final approval also depends on the property — appraisal, title and insurance.
Should I offer what my preapproval says?
No. The amount on a preapproval letter is what a lender currently sees as an upper limit, not a recommendation or a budget.
Do I need a preapproval to tour a home?
Not by federal rule. Since August 17, 2024, MLS participants under the NAR settlement must have a signed written buyer agreement before touring, and some states have added their own requirements. A preapproval requirement is the agent’s or listing agent’s practice.
Tomo Mortgage, LLC. NMLS #2059741. Equal Housing Lender