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MortgagesPITILetter P

PITI (Principal, Interest, Taxes, Insurance)

The four fundamental components that make up a standard monthly mortgage payment.

Overview & Practical Application

PITI represents the total monthly housing cost that lenders analyze when calculating a borrower's Front-End Debt-to-Income (DTI) ratio.

The four components are: - Principal (P): The dollar portion applied directly toward reducing the outstanding balance of the loan. - Interest (I): The finance charge paid to the lender for borrowing the money. - Taxes (T): Pro-rated local real estate property taxes assessed by county/municipal authorities, collected by the loan servicer into an escrow account. - Insurance (I): Homeowner's hazard insurance (and flood/windstorm insurance or private mortgage insurance if required), also collected and held in escrow until annual premiums are due.

When reviewing a mortgage quote, borrowers should never look only at Principal & Interest (P&I), as Taxes and Insurance frequently add $400 to $1,200+ to the actual out-of-pocket monthly outlay.

Components of a Standard PITI Mortgage PaymentPrincipal (35%)Interest (45%)TaxIns• Principal & Interest (P&I): Paid directly to reduce lender debt• Property Taxes (T): Held in Escrow and paid semi-annually to county• Homeowner's Insurance (I): Held in Escrow to pay annual hazard premium
Visual Infographic: PITI (Principal, Interest, Taxes, Insurance)

Mathematical Formula & Calculation

PITI = Principal + Interest + (Annual Property Taxes / 12) + (Annual Home Insurance / 12) + Monthly PMI

Sum of principal reduction, interest charge, monthly tax escrow, and monthly insurance escrow.

Variable Definitions:

  • Principal + Interest=Contractual amortized debt service
  • Taxes=Monthly 1/12th share of annual property tax assessment
  • Insurance=Monthly 1/12th share of hazard and hazard/flood insurance policies
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Interactive Financial Calculator

Test real-world numbers and see instant underwriting results.

Monthly Principal & Interest$1,896.20
Total Lifetime Interest Paid$382,633.47
Total Cost of Loan$682,633.47

Real-World Underwriting Example

Scenario: You buy a home with a $350,000 mortgage at 6.5%. Annual property taxes are $4,800 and homeowner insurance is $1,200/year.

Calculation:
P&I Payment = $2,212.24
Monthly Taxes = $4,800 / 12 = $400.00
Monthly Insurance = $1,200 / 12 = $100.00
Total PITI = $2,212.24 + $400.00 + $100.00 = $2,712.24/month.

Takeaway: The true monthly mortgage payment is $2,712.24.

Key Underwriting Takeaways

  • PITI is the actual monthly cash outflow required for homeownership.
  • Taxes and insurance portions are subject to annual escrow adjustments based on local tax reassessments and premium changes.
  • If your property belongs to an HOA, lenders add monthly HOA dues to PITI to form PITIA.
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Mortgages

Escrow

A neutral third-party holding account used to secure funds during real estate transactions and manage property tax and insurance payments.

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Credit & UnderwritingDTI

Debt-to-Income Ratio (DTI)

A key underwriting metric that measures the percentage of your gross monthly income committed to recurring debt payments.

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Mortgages

Amortization

The mathematical scheduling of equal periodic loan payments that systematically reduce both interest and outstanding principal over time.

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