Guides written by the person who runs the file.
Every guide says which rule is the agency’s, which is the lender’s, and what underwriting actually does with it. Each one is paired with the calculator or the lender data to run your own numbers.
Qualifying
8 guidesGift funds don’t need to be seasoned. They need a paper trail. Who can give, what the letter says, and how a gift wired at closing still works.
6 min read What Counts as Debt on a Mortgage Application (and What Doesn’t)The same $120,000 student loan can count as $0 or $1,200 a month depending on the program. How lenders count debts, and which ones can be excluded.
5 min read Co-Signing a Mortgage: What You Owe, and How It Follows YouFull liability, your credit report, your DTI — and the 12-month payment exception that takes a co-signed mortgage back out of it.
5 min read Buying a House on Social Security: The Gross-Up Almost Everyone Gets WrongSources say lenders gross up Social Security by 15%. Fannie’s own worked example says 3.75%. What the guideline does, and what documentation is worth.
5 min read Lender Overlays: Why Your Loan Was Denied When the Guideline Said YesFannie allows 50% DTI through DU. Your lender may cap it lower and never publish it. How overlays work, where they bite, and what to ask before you apply.
7 min read Condo Mortgage Rules Changed August 3, 2026: What Buyers Need to KnowLimited Review is gone for buildings over 10 units and the HOA reserve threshold rose to 15%. What it means for your timeline, your offer, and your options if a building fails.
4 min read DTI Ratio: What Mortgage Lenders Actually Look AtDebt-to-income ratio is the first number underwriters check. Here's how front-end and back-end DTI are calculated, and what actually counts as debt.
3 min read What Credit Score Do You Need to Buy a House?Real minimum credit score requirements by loan type — FHA, conventional, VA, USDA, jumbo — and how your score actually moves your rate.
4 min readAffordability
3 guidesSame house, four decisions, three ways to score each. Payment-only reverses one answer; cumulative interest overstates another by 2×. Where each method fails and what it hides.
7 min read How Much House Can You Actually Afford?Lenders tell you the maximum. Here's how to decide what you're actually comfortable with — including the ownership costs no approval number includes.
4 min read DTI Calculator vs. Affordability Calculator: Which Number Actually Matters?Both use the same underlying rules, but answer different questions. Here's exactly when to use each, and how they actually connect.
3 min readBuying
4 guidesThree numbers usually decide rent vs. buy: how long you'll stay, what your down payment could earn invested, and real appreciation.
3 min read How to Save for a Down Payment FasterPractical, non-obvious ways to shorten your down payment savings timeline — beyond the standard advice to just spend less.
3 min read First-Time Homebuyer Checklist: What to Know Before You StartThe financial groundwork worth doing before you ever contact a real estate agent — in the order it actually matters.
3 min read Pre-Qualification vs. Pre-Approval: What's the Difference?Why these two terms get used interchangeably but mean very different things — including what documentation each actually requires.
4 min readLoan programs
4 guidesHow ARM structures actually work — index, margin, and rate caps explained — and when an adjustable rate genuinely makes sense over a 30-year fixed.
4 min read FHA Loan Requirements: The Complete GuideReal 2026 FHA requirements — credit score, down payment, DTI limits, and MIP costs — with a worked example showing what it actually costs.
3 min read Is the 50-Year Mortgage Real? What the Proposal Actually Means50-year mortgages don't exist yet — they're a 2025 FHFA policy proposal. Here's the real story, plus an illustrative widget showing the hypothetical math.
3 min read Assumable Mortgages: How to Take Over a Seller's Low RateHow mortgage assumption actually works in 2026, the real savings math, and the equity gap problem most explainers skip.
3 min readRates & pricing
6 guides30-year at 6.71% while the Fed sits at 3.5%. What actually sets the rate, why the September question is a hike, and why a cut only helps for the right reason.
7 min read The Rate Lock-In Effect: What Your Low Mortgage Is Worth, and When to Give It UpWhat a sub-4% mortgage is actually worth against today’s rates, why it’s freezing inventory, and how to decide whether to keep it.
5 min read 2-1 Buydown Explained: How Temporary Rate Buydowns WorkWhat a 2-1 mortgage rate buydown actually is, who pays for it, and how to tell whether it's a genuine deal or a sales tactic dressed up as one.
3 min read Mortgage Discount Points vs. Rate Buydowns: What's the Difference?Both lower your interest rate, but permanently vs. temporarily — and knowing which one you're being offered changes the math entirely.
3 min read From the Fed Rate to Your Mortgage: How Inflation, Bonds, and the Fed Actually ConnectThe whole chain from a Fed decision to your rate quote, one link at a time. Which loans follow the Fed, which follow the 10-year, and why a cut can push mortgage rates up.
11 min read How Much Does a 1% Rate Difference Actually Cost You?A 1% higher mortgage rate sounds small. Here's the real dollar cost across different loan sizes, with exact numbers, not rough estimates.
3 min readCosts & escrow
5 guidesCredits are capped by down payment, can’t fund the down payment, and are forfeited if unused. How to size a concession before the offer, not after.
6 min read PMI Explained: When It Drops Off and How to Avoid ItPrivate mortgage insurance protects the lender, not you — but it's avoidable, and it automatically ends once you hit a specific equity threshold.
3 min read Closing Costs Explained: What You'll Actually Pay at the TableA real itemized breakdown of mortgage closing costs — lender fees, third-party fees, prepaid items, and taxes — plus how to actually reduce them.
4 min read Escrow Accounts Explained: Why Your Payment Isn't Just Principal and InterestHow mortgage escrow actually works, why your fixed-rate payment can still go up, and what an escrow shortage really means for your monthly bill.
3 min read Property Tax Rates by State: See Your State's RateApproximate effective property tax rates for all 50 states plus DC, with a calculator showing the dollar impact on your home price.
3 min readPaying it down
2 guidesSmall, consistent extra payments toward principal can cut years off a 30-year mortgage and save well over $100,000 in interest.
3 min read What Making 3 Extra Mortgage Payments a Year Actually DoesThe real numbers on making 3 extra mortgage payments a year — how many years it cuts, how much interest it saves, and how it compares to one lump sum.
3 min readRefinancing
2 guidesWith a 3.5% first mortgage, a cash-out refi costs $48,000 more over five years than a HELOC. At 7.5%, it’s a tie. Why the existing rate decides it.
4 min read When Does Refinancing Actually Make Sense?Refinancing isn't automatically worth it just because rates dropped. Here's how to find your real breakeven point.
3 min readStudent loans
4 guidesThe SAVE plan was vacated and two new plans replaced it in July 2026. What each option costs, which ones you may be barred from, and which choices cannot be undone.
3 min read RAP vs IBR: Which One Is Actually Cheaper?RAP is widely reported as the more expensive plan. Run against the actual regulations, the answer flips direction twice across the income range.
3 min read The RAP Income Cliffs: How One Dollar Can Cost $1,000 a YearRAP applies its percentage to your entire income, so crossing a tier boundary by a single dollar raises the rate on everything you earn.
3 min read Student Loan Forgiveness Is Taxable Again in 2026The exclusion that made forgiven student loans tax-free expired at the end of 2025 — but PSLF is still tax-free, despite what you may have read.
3 min readWho said yes above 50% DTI: the 2025 lender sheet
2.9 million purchase decisions from 2,523 lenders, ranked by approval rate at 50–60% DTI. One page per state, conventional / FHA / VA. Nobody else publishes it:
- The lenders in your state that actually approve high-ratio files, with the decision count behind every percentage
- Which ones are lenient everywhere and which only above 50%, so you know who to call first
- Builder lenders flagged, so a buydown-fed 95% doesn’t fool you
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