CALCMONEY // HELOC // MT
Estimate your HELOC borrowing power and monthly payment using Montana home prices, current rate spreads, and your equity position.
Open Full HELOC Calculator$445,000
9.00%
$155,750
4.7% flat
| Estimated Home Value | $445,000 |
| Estimated Equity (35%) | $155,750 |
| Max Borrow at 80% CLTV | $66,750 |
| Max Borrow at 90% CLTV | $111,250 |
$846/mo
$501/mo
Montana HELOC Quick Reference 2026
| Metric | Value | Notes |
|---|---|---|
| Est. HELOC Rate | 9.00% | Avg 30-yr rate + 2% spread |
| Median Home Value | $445,000 | Basis for equity calc |
| Max Borrow (80% CLTV) | $66,750 | 35% equity assumed |
| Max Borrow (90% CLTV) | $111,250 | 35% equity assumed |
| 10-Yr Repayment Payment | $846/mo | On $66,750 drawn |
| Interest-Only Draw Payment | $501/mo | Draw period only |
Rates are estimates. Actual HELOC rates vary by lender and borrower creditworthiness.
The median home price in Montana is $445,000. Homeowners who bought more than five years ago at pre-appreciation prices likely have substantial equity available. HELOC rates are variable and currently estimated at 9.00% in Montana, based on the average 30-year fixed mortgage rate of 7% plus a typical 2% HELOC spread.
Property taxes in Montana average 0.84%, which is near the national average of 1.1%.
Montana imposes a state income tax of 4.7% flat. HELOC interest used for home improvement may be deductible on your federal return. Consult a tax professional regarding Montana state-level deductibility.
HELOC rates in Montana typically run 8.50%–9.50%, based on the current average mortgage rate of 7% plus the typical HELOC spread. HELOCs are variable rate, so your rate will adjust when the Fed changes its benchmark.
Most lenders allow you to borrow up to 80%–90% of your home's value minus your outstanding mortgage balance. On the median Montana home of $445,000, assuming 35% equity, you could borrow approximately $66,750 at 80% CLTV or $111,250 at 90% CLTV.
HELOC interest is federally deductible only when the funds are used to buy, build, or substantially improve your home. Using HELOC funds for debt consolidation or personal expenses is not deductible. Montana has a state income tax of 4.7% flat, so the state deductibility rules may vary — consult a tax professional.