Written by the Simply Approved Mortgages editorial team
Reviewed for program accuracy by our Simply Approved Mortgages underwriting desk — Licensed mortgage originators (NMLS) — Colorado & Florida. We summarize published federal program rules; we do not set them. This article is educational and is not a quote, approval, or commitment to lend.
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This guide explains fha debt-to-income limits and what counts and what to prepare before speaking with a mortgage professional.
Under HUD Handbook 4000.1, the standard FHA debt-to-income (DTI) benchmark is 31% for housing expenses and 43% for total monthly obligations. However, automated underwriting systems can approve debt ratios exceeding 45% or even 50% when a borrower presents acceptable compensating factors, such as documented cash reserves or a minimal increase in housing expense.
Here is how FHA guidelines evaluate your income, calculate your debt ratios, and determine what you can borrow for a primary residence in Florida or Colorado.
Standard FHA DTI benchmarks and compensating factors
The Federal Housing Administration measures affordability using two calculations: the front-end ratio and the back-end ratio.
The front-end ratio covers your total proposed housing payment, which includes principal, interest, property taxes, homeowners insurance, and mandatory monthly mortgage insurance. The back-end ratio combines that housing expense with all recurring monthly debts, including student loans, auto loans, personal loans, and minimum credit card payments.
According to HUD Handbook 4000.1, the standard benchmark ratios for manually underwritten loans are 31% front-end and 43% back-end (often written as 31/43). When an application receives an "Approve/Eligible" recommendation through the Technology Open To Approved Lenders (TOTAL) Mortgage Scorecard, HUD permits higher ratios based on overall credit profile strength.
If your loan requires manual underwriting, HUD allows underwriters to exceed the baseline 31/43 ratios only when you document specific compensating factors:
- One compensating factor: Under HUD Handbook 4000.1, documented cash reserves, a minimal increase in your housing payment, or significant residual income can support ratios up to 37% front-end and 47% back-end.
- No discretionary debt: Under HUD Handbook 4000.1, when your housing payment is your only open account carrying a balance from month to month, ratios up to 40% front-end and 40% back-end are allowed.
- Two or more compensating factors: Under HUD Handbook 4000.1, ratios up to 40% front-end and 50% back-end are allowed.
To understand how your current income fits into these ratios, you can review our breakdown of FHA loan income requirements and DTI or test scenarios using our mortgage payment calculators.
What counts as qualifying income under HUD guidelines
Mortgage underwriters cannot simply look at gross earnings on a pay stub. Under HUD Handbook 4000.1, qualifying income must be verified as stable, ongoing, and likely to continue for at least the next three years.
Base salary and hourly wages
For salaried and standard hourly employees, underwriters require your most recent 30 consecutive days of paystubs and your past two years of W-2 forms. HUD requires a minimum two-year history of continuous employment, though legitimate gaps can be acceptable if you have been at your current job for at least six months and can explain the interruption, such as completing full-time education or military service.
Overtime, bonuses, and commissions
According to HUD Handbook 4000.1, overtime and bonus earnings can only be counted if you have received them consistently for the past two full years, and your employer verifies they are likely to continue. If your bonus or overtime income dropped substantially from one year to the next, the underwriter must use the lower, more recent figure or disqualify that portion entirely. Commission income requires a minimum two-year history; if commission accounts for 25% or more of your total earnings, you must also provide two years of signed federal tax returns.
Self-employment income
Under HUD Handbook 4000.1, business owners, independent contractors, and 1099 workers must document at least two full years of self-employment using signed personal and business federal tax returns (IRS Form 1040, plus 1120-S or 1065 schedules where applicable). Underwriters average the net profit after business deductions—not your top-line revenue. If you write off substantial expenses on your tax forms to lower your tax liability, that reduced net income is what gets evaluated against your debt obligations.
Child support, alimony, and public assistance
Under HUD guidelines, child support and separate maintenance payments can be included only if you provide a legal agreement or court order showing the payments are required to continue for at least 36 months after closing. You must also supply bank statements showing consistent receipt of those payments for the preceding 12 months. Social Security retirement, disability, and pension benefits are fully eligible with formal award letters. If those benefit streams are non-taxable, HUD allows underwriters to "gross up" the non-taxable portion by up to 115% (or 125% depending on current tax brackets) to establish equivalent pre-tax purchasing power.
Practical DTI impact: a Colorado and Florida comparison
Debt ratios directly determine your purchasing power when pairing an FHA loan with the standard 3.5% down payment. Under HUD Handbook 4000.1, buyers with a credit score of 580 or higher qualify for the 3.5% minimum down payment on an FHA 203(b) purchase loan.
Every FHA loan also requires mandatory mortgage insurance: an upfront mortgage insurance premium (UFMIP) equal to 1.75% of the base loan amount (under HUD Handbook 4000.1), which is typically financed into the loan, and an annual mortgage insurance premium (MIP) paid monthly. Under HUD Mortgagee Letter 2023-05, for loan terms over 15 years with a base loan amount at or below $726,200, the annual MIP is 0.55% when the loan-to-value (LTV) exceeds 95%, and 0.50% when the LTV is at or below 95%.
Remember that FHA county loan limits set the ceiling on your base loan amount, not the final home purchase price. You can inspect local thresholds using our guide to Florida FHA loan limits. If you need help covering upfront closing obligations, you might also look at state-specific programs like Colorado FHA down payment assistance.
Student loans, installment debts, and deferred accounts
Underwriters apply specific rules to non-mortgage debts when they calculate your back-end ratio under HUD Handbook 4000.1:
- Student loans: Under HUD Mortgagee Letter 2021-13, the lender uses the payment on your credit report, or your documented payment, when it is above $0. When the reported payment is $0, including during deferment, forbearance or a $0 income-driven repayment (IDR) plan, the lender counts 0.5% of the outstanding balance.
- Credit cards and other revolving accounts: The minimum payment on your credit report is used. If none is reported, the lender uses the payment on your current statement or 5% of the outstanding balance.
- Auto loans, personal loans and other installment debts: A closed-end debt can be left out only if it will be paid off within 10 months and the combined payments of all such debts are 5% or less of your gross monthly income. Otherwise, that account's monthly payment must be added to your back-end DTI.
All loans through Simply Approved Mortgages are subject to full lender underwriting, document verification, and credit approval.
Sources
This government publication is cited for FHA program background and general consumer education. FHA program rules described here are published by HUD and are not underwriting decisions; all loans remain subject to lender underwriting and approval. Simply Approved Mortgages LLC (NMLS #2620881) is a mortgage broker and is not HUD, FHA, or the CFPB, and is not affiliated with or endorsed by any government agency.
