A lender’s requirements aren’t one list. There are the rules the loan program sets, the rules the lender stacks on top of them, and the judgment calls an underwriter makes about your particular file. First-time buyers usually discover this the hard way: pre-qualified at one company, then denied three weeks later by another over something nobody mentioned at the start.
So here’s what actually sits behind the checklist, in the order it tends to sink deals.
The Four Questions Underwriting Is Really Asking
Every pay stub, bank statement, and letter of explanation you hand over feeds one of four questions. Once you see the pattern, the paperwork stops feeling random.
- Can you repay it? Stable income and a debt load that leaves room each month.
- Will you repay it? A credit history that suggests you handle obligations.
- Can you cover the gap? Down payment, closing costs, and often two months of reserves, all documented.
- Is the house worth it? An appraisal that supports the contract price, plus basic condition standards.
Most first-time home buyer lender requirements map directly onto those four buckets. When a file gets denied, it’s almost always because one bucket came up thin and nobody addressed it before submission.
Credit Score Minimums: Lower Than the Ads, Higher Than You’d Guess
The official floors are surprisingly forgiving. The real-world numbers a loan officer will quote you are usually stricter, because lenders add their own minimums on top of program rules.
- FHA: 580 gets you 3.5% down; a score between 500 and 579 requires 10% down.
- Conventional: 620 is the program floor for 3% down, though pricing gets ugly below 660 and many lenders set a 640 overlay.
- VA: no official minimum, but most VA lenders enforce 580 to 620 of their own.
- USDA: typically 640 for an automated approval.
- Jumbo: 700 to 720 in most cases.
A 620 score isn’t a dead end, but it does narrow your options and raise your rate. If your middle score lands in the 620s, it’s worth reading up on how conventional lenders treat fair credit before you assume you’re priced out. Paying down a single maxed-out card can move a score 20 to 30 points in one billing cycle, which is often the cheapest rate improvement available to you.
Debt-to-Income: The Number That Kills More Files Than Credit
Your debt-to-income ratio is monthly housing payment plus all other minimum obligations, divided by gross monthly income. Underwriting looks at it harder than most buyers expect.
The general ceilings land around 45% for conventional loans, 50% for FHA with compensating factors, and 41% for USDA in many cases. VA is more flexible but runs a residual income test instead, checking whether you have enough left after debts for a family of your size in your county.
What counts and what doesn’t
Car loans, student loans, minimum credit card payments, child support, and any loan you co-signed all count against you. Utilities, groceries, insurance premiums, and phone bills don’t. One trap: deferred student loans still get counted, usually at 1% of the balance or the actual payment, whichever the lender’s guidelines specify. A $40,000 deferred balance can quietly add $400 to your monthly debt load even though you’re paying nothing today.
Also plan for the fact that a co-signed loan counts against you even if the other person pays it. Parents who co-signed a sibling’s car loan five years ago routinely blow past the DTI limit without realizing it.
Down Payment Rules and the Paper Trail Behind Them
The down payment itself is rarely the obstacle. Proving where it came from is. Lenders want a 60-day paper trail on every dollar, and any deposit that isn’t a paycheck, tax refund, or documented transfer needs a written explanation.
Down payment sources that get approved:
- Your own savings, seasoned at least 60 days
- Gifts from family, with a signed gift letter and donor bank statement
- Down payment assistance grants from state housing finance agencies
- Retirement accounts, typically counted at 60% of the vested balance
- Sale of a vehicle or other asset, with bill of sale and deposit record
Cash in a shoebox is not a source. Neither is a $6,000 deposit your cousin Venmo’d you without a letter explaining it. If you’re aiming for a low down payment, it pays to know which lenders actually execute small down payment loans well rather than ones that advertise 3% and then push you toward 20%.
The Documents You’ll Be Asked For, Roughly in This Order
Paperwork requests feel endless, but the standard set is fairly short. Have these scanned and ready before you apply and you’ll cut a week off the timeline.
- Two most recent pay stubs covering 30 consecutive days
- W-2s for the past two years
- Tax returns, all schedules, if you’re self-employed, own rentals, or earn more than 25% from commission or bonus
- Two months of statements for every asset account, every page, even the blank ones
- Photo ID and Social Security number
- The signed purchase contract once you’re under contract
- Explanation letters for employment gaps over six months, recent credit inquiries, and any large undocumented deposit
Self-employed buyers should expect a deeper dive: a year-to-date profit and loss statement, a business license, and possibly a CPA letter confirming the business still exists. Write-offs that lowered your tax bill also lowered your qualifying income, which is a conversation worth having with your accountant in January rather than your loan officer in June.
Lender Overlays: Why Two Lenders Give You Two Different Answers
Here’s the part that confuses almost everyone. FHA allows a 500 score with 10% down. Plenty of FHA-approved lenders set their own floor at 620 and simply won’t touch a 560 file. That gap between program rules and lender rules is called an overlay, and it’s the single biggest reason identical buyers get different answers.
Overlays affect credit floors, DTI caps, reserve requirements, condo approvals, and even which property types are acceptable. A lender that’s excellent for a W-2 buyer with an 800 score may be a poor fit for someone with a 640 score and a 48% DTI. It’s worth comparing shops rather than taking the first quote: telling a good FHA lender from an expensive one comes down to overlays and fees, not the FHA logo on the website. VA borrowers face the same issue, which is why VA lenders that get underwriting right are worth seeking out specifically.
Programs That Loosen the Requirements for First-Timers
First-time buyer status unlocks real advantages, and not just the down payment. Fannie Mae’s HomeReady and Freddie Mac’s Home Possible both allow 3% down with income limits around 80% of area median, and they let gift funds cover the entire down payment. Both accept DTI up to 50% with stronger credit and reserves.
FHA is the more forgiving option on credit and cash reserves, though mortgage insurance never falls off if you put less than 10% down. USDA loans hit 0% down in eligible rural areas, and VA offers the same for veterans, with the funding fee waived for buyers with service-connected disabilities. State housing finance agencies add down payment assistance in the form of second mortgages, often forgivable after a set number of years.
Most of these come with a homebuyer education requirement, usually an eight-hour online course costing $75 to $100. It’s not a hurdle, and some programs discount your rate by an eighth of a point for completing it.
Check Yourself Before a Lender Does
Pull your three credit reports from AnnualCreditReport.com, add up your minimum monthly debt payments, and divide that plus an estimated mortgage payment by your gross monthly income. If the result is above 45%, you have work to do before applying, and it’s better to know now than after you’ve paid for an appraisal.
Then get at least three Loan Estimates within a two-week window. Rates on the same day for the same borrower routinely vary by half a percentage point, which on a $320,000 loan is roughly $100 a month for 30 years. The lender that answers your questions clearly, explains its overlays upfront, and puts the numbers in writing is usually the one worth going with, regardless of who’s advertising the lowest headline rate.