Calculator
Roof financing calculator
Enter a project cost (or a range), your down payment, and the APR and term from a real offer. See the monthly payment, total interest and how other terms compare.
Payments Live
Press Calculate, then move the sliders.
Promotional financing such as "no interest if paid in full in 12 months" is often deferred interest, not 0% APR: if the balance isn't cleared by the deadline, interest from day one can be added. Ask for the regular APR, the promotion end date and the payment needed to clear it in time.
How to use this tool
- Enter the project cost, or the low and high end of a range.
- Enter your down payment and the APR and term from a real offer.
- Move the sliders to compare terms. Watch total interest, not just the payment.
- Ask the lender for the regular APR and the payoff date for any promotion.
Paying for a roof in Ohio and Michigan
Storm season brings door-to-door offers of financing and insurance help. Take time to compare the APR, total interest and any deferred-interest terms, and never sign an assignment of your insurance benefits on the doorstep.
Ways to pay for a roof compared
| Option | How it works | Watch for |
|---|---|---|
| Cash or savings | No interest | Keep an emergency cushion |
| Contractor or promotional financing | Arranged at signing | Deferred interest: interest from day one if not paid off in time |
| Personal loan | Fixed payment, unsecured | Rates depend heavily on credit |
| Home equity loan or line | Borrow against the house | The house is collateral; variable rates on lines |
| Insurance claim | For sudden covered damage, not age | Deductibles and depreciation; read your policy |
Get a free inspection or multiple bids
Free Asset Protection Inspection
Have the roof you're worried about looked at in person, at no cost and with no obligation. Homes, commercial buildings and HOA communities in Ohio and Michigan.
Inspections are done by our founder, Jonathan Blake, or, if you allow it, by the independent roofing and exterior contractor he works for.
Get three comparable bids
- Save or print this tool's result so every contractor starts from the same numbers.
- Ask at least three contractors for a written proposal on the same scope.
- Compare line by line: area, tear-off, repairs, materials, permits, warranty.
Why plan here first
| What you get | Midwest Roof Calculators | National cost websites | A first number on the doorstep |
|---|---|---|---|
| Built for Ohio and Michigan weather and permits | Yes | Rarely | Varies |
| Shows the formula and every assumption | Yes | Sometimes | Rarely |
| See results before giving contact details | Yes | Often not | No |
| Ranges labeled with what they include and exclude | Yes | Varies | Varies |
| Questions to ask every contractor | Yes | Sometimes | No |
| Replaces an in-person inspection | No, and we say so | No | No |
General comparison of approaches, not of any named company.
Frequently asked questions
How is the monthly payment calculated?
With the standard installment formula: loan amount × r ÷ (1 − (1 + r)^−n), where r is the APR divided by 12 and n is the number of months. At 0% APR it is the loan amount divided by the months.
Is "no interest if paid in full" the same as 0% APR?
No. Deferred-interest promotions can charge all the interest back to the start if the balance is not paid off by the deadline. Read the lender’s disclosures.
Where does the APR come from?
From you. Enter the rate from an actual offer. We do not supply or recommend rates, and this is not a loan offer.
Want a quote to finance?
Takes about 30 seconds. No obligation, and we never sell your information.