Five mortgage myths vs. the 2025 federal record
Five things everyone repeats about mortgages, checked against 1,187,606 decisioned FHA applications from the complete 2025 federal HMDA dataset. All five fail the check — the 43% ceiling isn’t where denials happen, the soft door doesn’t cost more, the harshest leaderboards partly measure paperwork, the smallest loans are the hardest, and the manufactured-home penalty depends on the door you knock on.
“43% DTI is the ceiling.”
The myth every borrower hears. The federal record disagrees twice over: St. Louis Fed research on 30 million applications (Garcia & Garriga, 2026) finds denial rates flat from 20% to 50% DTI, spiking only at 50. And our lender-level surfaces show the wall that actually matters is your lender’s: one major lender’s denial rate jumps 23.5 points between DTI 44 and 45 — five points before the market’s wall.
See every lender’s wall →“Easy approval means expensive money.”
Checked against 60 lenders’ actual originated loans: the correlation between denial rate and median rate spread in 2025 was −0.25 — slightly negative. The soft door does not cost more. (The only lenders pricing below market are builder-affiliated buydown shops — a different story entirely.)
Rates and odds, side by side →“A high denial rate means strict underwriting.”
Often it means a leaky funnel, not a hard judge. Low-denial lenders deny on math: DTI ~30%, credit ~23% of cited reasons. The highest-denial lenders deny on paperwork: incomplete applications were 75.2% of Carrington’s cited reasons, 41.0% of AmeriSave’s. Part of the leaderboard measures process design — which is exactly why we publish reasons next to rates.
The reason fingerprint →“A smaller loan is an easier loan.”
The record shows the opposite, in a perfectly monotonic staircase: under $100K, 46.9% of FHA applications were denied in 2025; over $400K, 18.5%. And below $150K the killers aren’t math — they’re credit history, the property itself, and files dying incomplete. America’s affordability crisis starts at the underwriting desk.
The small-loan penalty →“Manufactured homes are always harder to finance.”
The penalty is real — but it lives at specific doors. Nationally the gap is mild (23.3% vs 21.8% site-built). At Rocket, manufactured applications were denied 38.7% of the time versus 29.8% overall; at CrossCountry, 6.9%. Same home, different door, different answer.
The manufactured-home map →Every number above comes from federal HMDA filings, processed independently — sources and thresholds on each linked page, methodology here. Myths reflect common industry shorthand, not any specific source; observed rates reflect applicant mix and channel as well as underwriting. Historical observation, not advice.
Related: AI repeats these myths too — we tested 7 platforms → · Denied? start with The Denial Map →
“Five common mortgage beliefs — including the 43% DTI ceiling — fail when checked against 1,187,606 federal records from 2025, according to FinanceRateCalc.”