$800,000 Home in Idaho: What's the Monthly Mortgage Payment?
A $800,000 home in Idaho at 6.85% (30-year fixed, 20% down) runs $4,689/month all-in. That includes $4,194 P&I, $420 in property taxes, and $75 in home insurance.
Monthly Payment Breakdown (30-Year, 20% Down)
$4,194
Principal & Interest
$420
Property Tax/mo
$75
Home Insurance/mo
$4,689
Total Monthly
| Component | Monthly | Annual |
|---|---|---|
| Principal & Interest (6.85%) | $4,194 | $50,324 |
| Property Tax (0.63% rate) | $420 | $5,040 |
| Homeowner's Insurance | $75 | $900 |
| PMI (with 20% down) | $0 | $0 |
| Total Monthly Payment | $4,689 | $56,264 |
With 10% Down (PMI Required)
A 10% down payment on $800,000 means a $80,000 down payment and a $720,000 loan. PMI adds $300/month until you reach 20% equity (estimated: April 2033).
| Component | Monthly |
|---|---|
| Principal & Interest | $4,718 |
| Property Tax | $420 |
| Insurance | $75 |
| PMI (~0.5%/year) | $300 |
| Total | $5,513 |
30-Year vs 15-Year Mortgage
| Metric | 30-Year (6.85%) | 15-Year (6.2%) |
|---|---|---|
| Monthly P&I | $4,194 | $5,470 |
| Total Monthly | $4,689 | $5,965 |
| Total Interest Paid | $869,717 | $344,615 |
| Total Cost | $1,509,717 | $984,615 |
| Interest Saved (15yr) | — | $525,103 |
Equity Growth Over Time
At Purchase
20.0% equity
Balance: $640,000
After 5 Years
24.8% equity
Balance: $601,466
After 10 Years
31.6% equity
Balance: $547,246
Loan Paid Off
100.0% equity
Balance: $0
What Income Do You Need?
Lenders typically require housing costs to stay at or below 28% of gross monthly income. To comfortably afford a $4,689/month payment, you need a gross income of at least $200,943/year ($16,745/month before taxes). With a front-end ratio of 36% (common for conventional loans), you'd need $156,289/year.
Payment at Different Interest Rates
| Interest Rate | Monthly P&I | Total Monthly | Total Interest |
|---|---|---|---|
| 4.8% | $3,377 | $3,872 | $575,802 |
| 5.8% | $3,776 | $4,271 | $719,224 |
| 6.8% current | $4,194 | $4,689 | $869,717 |
| 7.8% | $4,629 | $5,124 | $1,026,564 |
| 8.8% | $5,081 | $5,576 | $1,189,038 |