If saving for a down payment has been the hardest part of buying a home, finding an assistance program can feel like a huge relief. And it can be — the right program can move your closing date up by months or leave you with more savings after you move in.
But before you accept that help, there's one question that decides whether the program builds you equity or leaves you a future debt: do you ever have to pay it back, and if so, when?
Down payment assistance (DPA) comes in four basic structures. Some money is a grant that never has to be repaid. Some is forgiven after you meet conditions. Some is a deferred loan that comes due years later, often at the worst moment. And some is a second mortgage with monthly payments layered on top of your first. As a Denver mortgage loan officer, I've watched buyers accept the wrong structure because the marketing said "free money" — and then hit repayment at a sale or refinance they didn't expect. Here's how to tell the difference before you sign.
1. Grants: Assistance that generally doesn't require repayment
A grant provides money toward eligible expenses, such as your down payment or closing costs, generally without requiring you to pay it back. It's the only DPA structure where the funds are truly yours — but I'd still read the terms with you before calling it free money.
Three things matter. First, who qualifies, what can the funds cover, and are there occupancy rules that could trigger repayment? Second, and more important, the mortgage that comes with the grant. Many programs pair a grant with a higher interest rate on the first mortgage, so you're trading repayment for a more expensive loan.
Colorado is a clear example. The Colorado Housing and Finance Authority (CHFA) Down Payment Assistance Grant provides up to the lesser of 3 percent of your first mortgage or $25,000, with no repayment required — but CHFA notes that higher interest rates apply.
The equity tradeoff is the point: a grant that doesn't grow a balance can still shrink your gains if the paired rate is higher than you'd get on a conventional loan. On a $300,000 first mortgage, a 0.25 percentage-point rate premium adds roughly $44 a month and roughly $15,000 in interest over 30 years — assistance that costs you more over time than the cash it saves at closing. That's why we compare the full loan package, not just the amount of help you receive.
Ask: "Does this require repayment under any circumstances, and does accepting it change my mortgage rate or costs?"
2. Forgivable loans: Help that becomes yours if you meet the rules
A forgivable loan starts as a loan, then the balance is wiped out when you meet the program's requirements — usually by keeping the home as your primary residence for a set number of years. On paper it acts like a grant, which is why many buyers treat it as one. The forgiveness schedule changes that.
There are two schedules worth knowing. Some programs forgive a portion each year on a pro-rata basis; others forgive the entire balance only after you reach a certain date. HUD's overview of assistance structures describes forgivable loans that are canceled gradually, such as 20 percent per year over five years. The difference matters when you sell early.
Schedule | $10,000 loan | What you owe after 3 years |
|---|---|---|
Pro-rata (20% forgiven each year) | Forgiven $2,000/year | $4,000 still outstanding |
All-at-once (forgiven at year 5) | Nothing forgiven yet | $10,000 still outstanding |
The real-world gap shows up in programs like Colorado's El Paso County Turnkey Plus, a forgivable soft second at zero percent interest where half the assistance is forgiven pro-rata over the first five years and the rest at the 30-year maturity of the first mortgage. Selling, refinancing, or moving out before the forgiveness deadline can trigger repayment of the unforgiven balance.
Ask: "When is the loan forgiven, and how much would I owe if I sell, refinance, or move out before then?"
3. Deferred loans: No payment now, but repayment later
A deferred loan postpones repayment, which makes your monthly budget easier to manage — but you still carry an obligation. The balance becomes due when you sell, refinance, pay off your first mortgage, stop living in the home, or reach a date in the agreement.
Programs that recycle their funds often use a "silent second" — a due-on-sale mortgage that defers all repayment of principal until the home is resold, so it never adds to your monthly housing cost. The National Housing Conference explains the catch: with a grant the family keeps the assistance, while with a silent second mortgage they must pay it back so the funds can help other families.
A Colorado example: CHFA's Down Payment Assistance Second Mortgage Loan provides up to the lesser of 4 percent of your first mortgage or $25,000 as a zero percent deferred second that's repaid when you sell, refinance, or pay off the home. Since it's zero percent, that balance doesn't grow while deferred — but not every program works that way.
I'd also check whether interest accrues while payments are deferred. If it does, the amount you eventually owe could be larger than the assistance you originally received.
Ask: "Exactly what makes this loan due, and will the balance grow while I'm not making payments?"
4. Second mortgages with monthly payments: Another payment to budget for
Some assistance comes through a second mortgage you repay each month alongside your main mortgage. This is the structure that most directly raises your housing cost — and the one most likely to be mislabeled, because forgivable and deferred loans are also structured as second mortgages. The phrase "second mortgage" alone doesn't tell you the repayment terms.
For a repayable second, I'd want you to see your combined housing cost before deciding. That includes both loan payments, property taxes, homeowners insurance, and any required mortgage insurance or association dues. The Consumer Financial Protection Bureau points out that borrowing money for a down payment increases your debt and can increase your monthly payments.
A repayable second also tightens your debt-to-income (DTI) ratio, since lenders count the second's payment when qualifying you for the first mortgage. On a 30-year term, a $20,000 second at a modest rate adds a payment that must fit under your DTI cap alongside the first mortgage — and that cap is often the reason a buyer gets declined.
Ask: "What is the payment, how long will I make it, and what will my total monthly housing cost be?"
Understand the help before you accept it
1Which DPA structure is the least likely to come back as a repayment?
It depends on the program. Grants (like CHFA's) carry no repayment. Forgivable seconds vanish after a residency period, typically 5 to 15 years. Deferred-payment seconds come due when you sell, refinance, or stop using the home as your primary residence. Check the exact terms — the only structure that never grows a balance is a true grant.
2Does a deferred second mortgage affect my debt-to-income ratio?
Usually yes. Lenders count a second mortgage's full balance as debt even when payments are deferred, because the lien still sits on the property. That's why the second is 'silent' — it doesn't raise your monthly payment, but it can still tighten your DTI and affect future refinancing. Ask your lender to show the combined impact before you commit.
3Can I combine two down payment assistance programs?
Not always. Most programs allow layering one DPA on top of another, but each has its own income, price, and first-mortgage limits, and some forbid stacking. Homebuyer education is a near-universal requirement across programs, so complete that course early regardless of which you choose.
Down payment assistance can be the piece that makes homeownership possible — I've seen it move dozens of Colorado buyers from renting to closing. The goal is to choose a program whose terms fit your budget and your plans, not just the one that sounds like free money.
Before moving forward, you should understand three things: what you receive, what you might owe, and what happens if your plans change. That third point is where most buyers get surprised, because repayment is rarely triggered by a choice you make today — it's triggered by a sale, refinance, or move you can't predict five years out.
Send me the name of the program you're looking at. I'll help you review the terms and explain in plain English how the assistance and any repayment works, so you can compare programs with confidence instead of guessing at the fine print.
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