Real Estate Calculators (2026)

Using the amortization formula M = P × [r(1+r)^n] / [(1+r)^n − 1]. For a $400,000 home at 6.5% with 20% down: monthly P&I = $2,023. Add property taxes (~$367/mo), insurance (~$100/mo), and PMI if under 20% down. Use our Mortgage Calculator US for an exact breakdown.

A good cap rate typically ranges from 4% to 10% depending on the market. In expensive coastal markets (NYC, SF, LA), cap rates of 3-5% are common. In Midwest and Sun Belt markets, cap rates of 6-10% are achievable. The national average is around 6-7% for single-family rentals.

Lenders use the 28/36 rule: your housing payment (PITI) should not exceed 28% of gross monthly income. On a $100,000 salary: max PITI = $2,333/month. At 6.5% for 30 years with 20% down, that supports roughly a $350,000-$380,000 home. Use our Home Affordability Calculator for a precise number.

A good rule of thumb: refinance if you can lower your rate by at least 1% and plan to stay in the home for 3+ years. Calculate your break-even point by dividing closing costs by monthly savings. If closing costs are $6,000 and you save $200/month, break-even is 30 months. Use our Mortgage Refinance Calculator.