Why PITI is more than principal and interest
Why the payment that leaves your account is larger than the one you were quoted.
Private by design. Your numbers stay on this device.
Educational estimates only. Not financial, tax, or lending advice.
Why is my mortgage payment higher than the quote?
Principal and interest is what a rate quote advertises. PITI adds property taxes and homeowners insurance, which come with the property whether or not they are escrowed, and can add a quarter to a half again on top. Mortgage insurance and HOA dues sit outside PITI but still leave your account monthly.
What does PITI include?
Principal, interest, taxes and insurance — the four parts of a payment that a rate quote only covers two of.
Principal and interest is the loan itself: what you borrowed and what the lender charges to lend it. That is the figure a rate quote advertises, and it is the only part that a lower interest rate changes.
Property taxes and homeowners insurance come with the property rather than with the loan. You owe them whether or not the lender collects them, and refinancing does not reduce them by a cent.
How much bigger is the real payment?
Enough to change what you can afford. Taxes and insurance commonly add a quarter to a half again on top of principal and interest.
| Component | Monthly | Share |
|---|---|---|
| Principal & interest | $2,528 | 70.7% |
| Property tax (1.1% of a $450,000 home) | $413 | 11.5% |
| Homeowners insurance | $150 | 4.2% |
| Private mortgage insurance (0.55%) | $183 | 5.1% |
| HOA dues | $300 | 8.4% |
| Total all-in monthly cost | $3,574 | 100% |
An illustration, not a quote. Property tax and insurance vary enormously by location. Two identical homes with identical loans can differ by several hundred dollars a month.
The spread between locations is the part worth internalising. The same loan on the same house price can carry wildly different tax and insurance figures in two different counties, which is why a national average is close to useless for a decision about one specific address.
What is not in PITI but still leaves my account?
Two common items sit outside the acronym and inside the bill.
- Private mortgage insurance is charged while your equity is thin. It is temporary on conventional loans, which matters: treating it as a 30-year cost overstates the true figure, so this calculator can drop it at the point the rules allow.
- HOA dues are never escrowed and never appear on a Loan Estimate, but they are a monthly obligation of owning the property in the same way the tax bill is.
Why does my fixed-rate payment keep changing?
Because the escrow half of it is an estimate, and estimates get re-analysed.
Where the lender collects taxes and insurance, the money goes into an escrow account and the lender pays the bills as they fall due. The monthly amount is a forecast of next year’s bills.
When the bills come in higher, the servicer runs an escrow analysis and raises the collection, often adding a catch-up for the shortfall. The principal-and-interest half of a fixed-rate mortgage genuinely never moves. The payment does.
Why does using P&I alone go wrong?
It understates what you are committing to, in the one calculation where understating is most expensive.
A budget built on the quoted payment misses the largest recurring cost of ownership after the loan itself. Affordability judged that way produces a number you cannot actually sustain, which is why every calculator on this site prices the full PITI figure by default and shows the parts separately.
It matters for comparisons too. Taxes, insurance and HOA dues are identical across every refinancing option, so including them changes the monthly figure without changing which option wins — but leaving them out makes every option look affordable in a way none of them are.