The Quick Read: The structure of the assistance decides whether your debt-to-income ratio moves, not the name on the brochure. A grant adds no monthly payment, and a forgivable second normally adds none. A repayable second is a real loan with a monthly payment, and that payment goes into your ratio. Every one of these second liens still counts in combined leverage and sits on the house until it is forgiven or repaid.
Key Takeaways
- Debt-to-income (DTI) is your monthly debt payments divided by your gross monthly income. Only a scheduled monthly payment changes the top of that fraction.
- Grant-style assistance and forgivable seconds add no payment. The repayable second adds one.
- A “no payment” second is not invisible. It is still a lien and still part of the file.
- The right structure depends on how much DTI room you have, not on which one sounds best.
What Does DTI Actually Measure?
DTI is all your monthly debt payments divided by your gross monthly income. The Consumer Financial Protection Bureau describes it that way, and it also notes that different loan products and lenders set different DTI limits. There is no single national number.
Lenders look at two versions. The front-end ratio is your proposed housing payment alone: principal and interest, taxes, insurance, mortgage insurance, and association dues. The back-end ratio adds every other monthly debt, such as car loans, student loans, and credit card minimums.
Assistance enters the picture in one place. If it creates a required monthly payment, that payment lands in the housing expense, and so in both ratios. If it creates no payment, the fraction stays as it was.
That is the whole mechanism. Everything else here is about figuring out which side of that line a given structure falls on.
What Are the Four Shapes of Assistance?
Across the wholesale programs Lendmire arranges files with, assistance comes in four shapes. Each pairs with a government-backed first mortgage. Each is for an owner-occupied primary residence only, never a second home or a rental.
| Shape | Typical size | Monthly payment? | Lien? |
|---|---|---|---|
| Grant-style | 2% or 3.5% of price | None | None |
| Forgivable second | 3.5% of price or value | None | Yes, until forgiven |
| Repayable second | 3.5% or 5% of price or value | Yes | Yes |
| Refinance-cost second | 1% to 3.5% of balance | Yes | Yes |
Nobody has to be a first-time buyer. Repeat and move-up buyers qualify. The grant carries an income test of 140% of area median income unless the buyer falls in a qualifying category: first responder, educator, medical worker, civil servant, military, first-time buyer, or a purchase in an underserved census tract. The second-lien options carry no income limit of their own. On a USDA first lien, USDA’s limits still apply.
These programs are available through wholesale lenders, subject to program guidelines and full underwriting. This is a lender-reviewed process, not a promise of approval. Buyers can see the full lineup of down payment assistance programs Lendmire arranges.
How Is Each Type Treated, Step by Step?
Underwriting happens in order. The first mortgage is evaluated on its own payment first. Then the assistance is read from its legal documents, and the label is ignored.
Step one: the first lien. An FHA, USDA, or HUD-184 loan is underwritten on principal and interest, taxes, insurance, mortgage insurance where it applies, and association dues. On FHA, the upfront mortgage insurance premium is a percentage of the base loan and can be financed into the loan. That raises the loan balance but is not a separate monthly bill.
Step two: identify the structure. The underwriter reads the note, the security instrument or grant agreement, and the commitment letter. Does it call for a payment? Is it a gift with no expectation of repayment, or a loan with a lien?
- Grant-style. Nothing to repay. It is released at closing with no lien, no payment, and no interest. It is applied toward the FHA minimum required investment, so it cuts the cash you bring. DTI is untouched.
- Forgivable second. No interest and no monthly payment. It is forgiven after 36 or 60 on-time first-lien payments, depending on the option. No payment means no change to the numerator. But it is a lien for the whole term, and it counts in combined leverage.
- Repayable second. This is a real loan: interest-bearing, with a monthly payment, a 30-year amortization, and a balloon due in year 10. Its payment is added to the housing expense and flows into both ratios.
- Refinance-cost second. Same repayment terms as the repayable second, applied to an FHA refinance. Its payment counts the same way.
Assembling the file. The lender needs the commitment letter, the draft note and security instrument, the repayment and forgiveness terms, the source of funds, and the closing disclosure showing where the money goes. The grant also requires an HUD-approved homebuyer education course.
Why Is a Grant Different From a Forgivable Second?
Both add nothing to your monthly debt. The difference is what is left behind.
A grant leaves no lien and no obligation. After closing, it is as if you had brought more cash of your own.
A forgivable second leaves a lien. You earn forgiveness by making the first-lien payments on time and, in practice, by staying in the home as your primary residence. Sell or refinance early, and the unforgiven balance can come due. HUD’s rules on gifts draw the same line: a true gift carries no expectation of repayment, and anything with a repayment, lien, or recapture feature is secondary financing instead.
For DTI today, they look identical. For your exit options in the first few years, they do not.
What Does a Repayable Second Do to the Ratio?
It adds a payment to the housing expense, and the lender cannot skip it. Subordinate liens count among the components of the housing payment, alongside the first mortgage, insurance, taxes, mortgage insurance, and association dues. For USDA-style underwriting, the housing and total debt ratios carry set limits, with exceptions only where valid compensating factors exist.
FHA has the same logic. HUD’s manual-underwriting benchmark has been 31 percent for the housing ratio and 43 percent for total debt, and HUD’s notice on manual underwriting allows either to be exceeded with compensating factors. That notice is dated, and borrowers with no credit score or a score below 580 may not exceed the standard ratios. Today most FHA files run through automated underwriting, which commonly allows more room. The assistance options follow the automated finding.
Here’s the catch. A repayable second can shrink how much first mortgage you qualify for. The extra payment eats room under the ceiling. Take the larger 5% version, which also covers closing costs. It reduces cash to close more, but it adds a larger payment than the 3.5% version.
Does it still net out in your favor? Sometimes. Because the second funds part of the purchase, the first mortgage is smaller than it would be otherwise. So the combined housing payment is not simply the old payment plus a new one. Your loan officer can run both versions side by side, and that comparison is the point of the exercise.
Also note that manual underwriting is not allowed on the repayable second. The file must clear automated underwriting. That makes the ratio the system produces, not a human override, the one that matters.
A Buyer Scenario in Percentages and Plain Words
Picture a renter with steady income, a car loan, and student loan payments, buying a primary home with an FHA first mortgage. The minimum investment is 3.5% of price. She is short on savings but her back-end ratio is already close to the automated underwriting ceiling.
- With the grant: she brings less cash, and the ratios stay exactly as they were. If she fits the income test or a qualifying category, this is the cleanest fit for a tight DTI.
- With the forgivable second: the ratios also stay put, and the extra funds cover 3.5% of price. She commits to staying put long enough for forgiveness, and the lien counts in combined leverage.
- With the repayable second: cash to close drops, but a new monthly payment enters both ratios. With a tight back-end ratio, this is the version most likely to push her over.
Now flip it. Say her debts are minimal and her ratios have headroom. Then the repayable second’s payment may fit comfortably, and its 5% version covering closing costs becomes useful. The only difference between the two buyers is DTI room.
The structure that adds no payment is not automatically the right one, either. The grant has the income and category test. The forgivable second ties you to the house. Fit comes first.
Where Does the General Rule Break?
“No payment means no DTI impact” holds up in most files. These are the places it gets tested.
A “no payment” second is still in the file. It is recorded as a lien and counts in combined leverage. Consumer explainers note these loans may appear on your credit report even when no payment is due. Silent is not the same as invisible.
The label can mislead. Some products called grants are really forgivable loans. RealCostIQ’s guide flags the same trap. Read the note. If there is a lien or a repayment trigger, the lender treats it as secondary financing no matter what it is called.
Payment shock is not recalculated. Your DTI is measured at closing. A deferred note or a balloon that later turns into a payment will not have been counted. The balloon on the repayable second in year 10 is a real planning item, even though the monthly payment is already in your ratio.
Provider matters on FHA. HUD treats governmental entities and HUD-approved nonprofits differently when they provide secondary financing. Qualitatively, the source of the assistance affects how it is documented and what it can be used toward.
USDA has no ratio shortcut. A subordinate lien payment always goes into the housing ratio on a USDA loan. There is no special treatment because the money is assistance.
HUD-184 does not supply assistance itself. HUD’s Section 184 borrower page says buyers should check with their tribe or state housing finance agency for assistance. It also says new debt adds to your DTI and lowers the home loan you might qualify for, and that manual underwriting is used. A human underwriter reads the assistance documents on those files.
Nothing stacks. No option can be combined with another assistance program, and a mortgage credit certificate is not permitted with the second-lien options. Layering is not a way to shave your ratio.
Choosing by Your Situation
| Your situation | Likely lean | Why |
|---|---|---|
| Tight DTI, meets grant test | Grant-style | No payment, no lien |
| Tight DTI, outside grant test | Forgivable second | No payment, but a lien |
| DTI room, need closing-cost help | Repayable second at 5% | Covers costs; payment fits |
| Expect to sell within a few years | Grant-style | No recapture exposure |
| Staying put long term | Forgivable second | Forgiveness is earned |
Credit scores also steer the choice. The grant has a 620 floor, the forgivable second 640, and the repayable second 660, all subject to program guidelines. If your score sits between those, the choice may be made for you.
Counseling matters too. The grant requires an HUD-approved homebuyer education course, which is a useful step before deciding anything.
Questions to Ask Your Loan Officer
- Does this assistance create any scheduled monthly payment, now or later?
- Is it a grant, a forgivable loan, or a repayable loan, according to the note itself?
- What triggers repayment: sale, refinance, moving out, missed payments?
- What do my front-end and back-end ratios look like with each option?
- How does each option change my first mortgage amount?
- Which option does the automated underwriting finding support?
- What documents do you need for the assistance, and when?
Ask for the comparison in writing. The numbers are specific to your income, debts, and property.
Key Terms Defined
Debt-to-income ratio (DTI): Your monthly debt payments divided by your gross monthly income.
Front-end ratio: Your housing payment alone, as a share of gross monthly income.
Back-end ratio: Your housing payment plus all other monthly debts, as a share of gross monthly income.
Second lien: A loan recorded behind your first mortgage, repaid after the first if the house is sold.
Forgivable second: A second lien with no payment that is wiped out if you meet the program’s conditions.
Balloon: A lump-sum balance due at a set point, such as year 10 on the repayable second.
Combined loan-to-value (CLTV): All loans on the home added together, divided by its value.
Frequently Asked Questions
Does down payment assistance count as income?
No. It is treated as funding for the purchase, not as earnings, so it does not raise the income side of your ratio. It can only help your file by reducing cash you must bring.
Do deferred or forgivable seconds count in my DTI?
Not as a monthly payment, because there is none. They still count in combined leverage and show up as a lien on the property. A repayable second is different: its scheduled payment is included in both ratios.
What if my DTI is too high with a repayable second?
Look at the grant or forgivable options, which add no payment, if your credit and eligibility fit. You can also ask whether the 3.5% version, with its smaller payment, clears the ratio. Compensating factors may help on some files, but the repayable second must clear automated underwriting.
Can I switch assistance types after I apply?
Sometimes, but eligibility, credit floors, and first-lien pairing differ by option, so a switch can change the whole file. Ask early, before documents are ordered, so the comparison happens up front.
Does the assistance work for a rental or second home?
No. These options are for owner-occupied primary residences only.
If you are buying a primary home and want to see whether a down payment assistance option fits your file, Lendmire can help you compare the grant, forgivable, and repayable structures alongside an FHA, USDA, or HUD-184 first mortgage. For related reading, Lendmire’s piece Does a Down Payment Assistance Second Mortgage Count Against Your DTI? goes deeper on the lien question. Program availability, credit floors, and eligibility are subject to lender guidelines and full underwriting. This is not a commitment to lend.
About Lendmire
Lendmire (NMLS# 2371349) is a mortgage brokerage serving home buyers in 16 states. Down payment assistance programs are arranged with FHA, USDA and HUD-184 first liens through wholesale lending channels; Lendmire brokers the financing and the lender underwrites each application. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.
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References
1. Consumer Financial Protection Bureau
2. HUD Section 184 Borrower Resources
3. ConsumerAffairs – What is DPA?
This article is part of Lendmire’s down payment assistance program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: Down Payment Assistance Repayment Rules by Program Type When You Move · How to Check Down Payment Assistance Eligibility in Minutes · How Gifts and Down Payment Assistance Cover a Full Down Payment
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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Disclosure information. Lendmire is a state-licensed mortgage brokerage under NMLS# 2371349. Lendmire is not a depository institution, direct lender, or financial advisor — all loans referenced are placed through wholesale lender partners and are subject to each lender's underwriting standards. This article is provided for general informational purposes and is not a commitment to lend, nor does it constitute financial, legal, or tax advice. Loan programs, terms, rates, and qualification standards change without notice and depend on borrower profile, property type, and the state in which the subject property is located. Equal Housing Opportunity provider. NMLS Consumer Access: nmlsconsumeraccess.org.