Yes, a parent can co-sign your mortgage, and it's one of the most common ways buyers at AAA Capital Funding close the gap between the house they want and what their own paycheck supports. Your parent signs the loan with you, and the lender adds their income to yours. They don't go on the title and they don't move in. The house is yours.
How a parent's income and debts count
The lender adds your parent's gross monthly income to yours and adds their monthly debts to yours, then runs the combined numbers against the program's debt-to-income limits. FHA allows a house payment up to 46.9% of gross income and total debts up to 56.9% with an automated approval. Conventional allows 50% total.
Your parent's own housing cost counts as one of their debts. If they rent, that's the rent. If they have a mortgage, it's the full payment with taxes and insurance. If they own free and clear, it's the property taxes and insurance. Car loans, card minimums and every other payment on their credit report count too.
Retired parents qualify as well. Pensions and Social Security count when they're steady and documented, and non-taxable income such as SSI is grossed up 15% on FHA and 25% on Conventional because it isn't reduced by taxes.
A worked example
Jordan earns $3,500 a month and has $280 in monthly debts. Her father earns $5,200 a month. His own mortgage payment is $1,650 with taxes and insurance, and his truck payment is $380, so his debts are $2,030. Here's FHA at a 5.75% rate, with property tax of 0.95% a year and homeowners insurance of $283 a month:
| Jordan alone | Jordan and her father | |
|---|---|---|
| Qualifying income | $3,500.00 | $8,700.00 |
| Monthly debts counted | $280.00 | $2,310.00 |
| Highest FHA price | $195,000 | $338,000 |
At $338,000 the loan is $331,877.98 including the 1.75% upfront mortgage insurance premium. The house payment is $2,636.82: $1,936.75 in principal and interest, $267.58 in property tax, $283.00 in insurance and $149.49 in monthly mortgage insurance. Add the $2,310 in combined debts and the total ratio is 56.9% of $8,700, right at FHA's limit. Her father adds $143,000 to what Jordan can buy.
His mortgage is what stops the number there. If he co-signed while renting a $1,200 apartment, his debts would be lower and Jordan's price higher. The co-signer calculator shows that trade-off for your own parent.
FHA and Conventional rules for a parent co-signer
| Rule | FHA | Conventional (Fannie Mae) |
|---|---|---|
| Down payment, single-family | 3.5%, or $0 with FHA 100% financing | 5% |
| 2 to 4 units | 25% down (75% loan-to-value) | 5% |
| Non-taxable income gross-up | 15% | 25% |
| On the title | No | No |
| Lives in the home | No | No |
FHA gives family co-signers full financing on a single-family home. On a 2 to 4 unit property, FHA limits any loan with a non-occupant co-borrower to 75% loan-to-value, even when that person is a parent. USDA doesn't allow co-signers at all, and VA expects the people on the loan to live in the home, so a parent co-signer is an FHA or Conventional move.
What your parent signs up for
Your parent is fully responsible for the loan along with you, and it shows on their credit report as their debt. Your on-time payments report on their credit too. Once you've made 12 months of payments from your own account, Fannie Mae lets a lender leave this loan out of your parent's debt ratio if they apply for a loan of their own, as long as the lender sees those statements.
The arrangement doesn't have to last forever. When your income grows enough to carry the payment, you refinance into your own name and your parent's obligation ends.
If the numbers still come up short
- Pick the stronger parent. Two parents on the loan means two sets of debts. One parent with low debts can add more than both together.
- Pay off a parent's small debt. Clearing a $380 truck payment lowers the combined ratio as much as clearing one of yours.
- Pair it with FHA 100% financing. A down payment assistance second covers the 3.5%, so the co-signer adds income and nobody has to add cash.
- Ask for a gift instead of, or on top of, a signature. A parent can gift closing cost money on FHA and Conventional with a signed gift letter.
Run both incomes through the co-signer calculator before anyone signs anything. Then have your parent join you on a call to AAA Capital Funding at 888-601-8344, and we'll set the loan up so it works for both of you.