Real Estate Multi-Tool Workspace

Home Buyer Mortgage & Housing Decision Desk

Model your true monthly homeownership commitment before making an offer. Simultaneously calculate Principal & Interest, local county property taxes, hazard insurance, private mortgage insurance (PMI) requirements, and lifetime debt service costs.

Home Buyer Financial Decision Desk

$2,902 / month

Principal & Interest: $2,335 | Tax & Ins: $567

Loan & Property Parameters

Home Purchase Price ($)

Down Payment (%)

Down Payment ($)

Interest Rate (%)

Term (Years)

Property Tax (%/yr)

Home Insurance ($/yr)

Monthly HOA Dues ($/mo)

Loan Principal

$360,000

Loan-to-Value (LTV): 80%

Total Lifetime Interest

$480,600

Over 30 years

Monthly Payment Breakdown

P&I: $2335

Tax: $450

Ins: $117

Specialized mortgage calculators:

Mortgage•Refinance•FHA Loan•HELOC•Down Payment

The PITI Formula & Lending Ratios

Lenders evaluate borrowers using the Front-End Debt-to-Income (DTI) ratio, which measures total housing expense (Principal, Interest, Taxes, and Insurance — PITI) against gross monthly income. Most conventional conforming loans require front-end DTI to remain below 28% to 36%.

When down payments are below 20% (Loan-to-Value greater than 80%), conventional mortgage guidelines require Private Mortgage Insurance (PMI), which typically adds 0.5% to 1.5% of the total loan balance per year until 20% equity is reached.