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Conventional Mortgage Calculator

By Calxy · Updated · Calculation methodology

Plan a conventional mortgage with conventional PMI behavior, financing costs and recurring housing costs.

Printed from Calxy · https://www.calxy.net/financial/conventional-mortgage-calculator

Check your inputs—Complete valid inputs to calculate a current result.
USD

1 – 1,000,000,000 USD

USD

0 – 1,000,000,000 USD

%

0 – 100 %

years

1 – 50 years

USD

0 – 1,000,000,000 USD

USD

0 – 1,000,000,000 USD

USD

0 – 1,000,000,000 USD

USD

0 – 1,000,000,000 USD

%

Conventional-style estimate based on entered down payment; set to 0 when PMI does not apply.

years

Upper limit on PMI years. PMI also stops at Homeowners Protection Act automatic termination (the original schedule reaching 78% of the price, or the term midpoint), whichever comes first. Enter fewer years if you plan to request cancellation at 80%.

Estimated initial monthly housing cost

$3,109.53

  • Principal and interest$2,439.78
  • Estimated monthly PMI$144.75
  • Estimated PMI over 142 months$20,554.50
  • PMI can be cancelled on request (80% of price)month 131
  • PMI ends automatically (78% or term midpoint)month 142
  • Estimated closing and ownership costs$43,554.50
  • Estimated cash needed at purchase$23,000.00
  • Total interest$492,321.73
  • PMI modeincluded

Planning-only estimate using the fixed conventions above. PMI removal follows the Homeowners Protection Act (12 U.S.C. 4902): you may request cancellation when the balance is scheduled to reach 80% of the original value, and it ends automatically at 78% (or the term midpoint) if payments are current. For a strict quote, confirm lender-specific PMI tiers and any optional refinance/portfolio pricing assumptions.

How this was calculated

Base loan = home price − down payment (3.50% down).

Conventional principal and interest use the entered term and rate with the base loan.

PMI is estimated as annual PMI rate × financed amount ÷ 12 for 142 months: the entered duration or Homeowners Protection Act automatic termination (month 142 at 78% of the price on the original schedule, month 180 at the term midpoint), whichever comes first.

Housing cost = principal and interest + tax + insurance + HOA + (estimated PMI when applicable).

How this estimate is built

This page models a fixed-rate conventional mortgage with a standard amortization schedule. The headline is principal-and-interest plus recurring property-tax, insurance, HOA, and optional PMI where your entered down payment is below 20%.

PMI in this calculator is entered as an annual rate and charged until the Homeowners Protection Act automatic termination date (the month the original schedule reaches 78% of the price, or the term midpoint), or for the duration you set if that is shorter. You can usually request cancellation earlier, once the balance is scheduled to reach 80% of the original value (12 U.S.C. 4902).

What to check after the result

Compare this payment against your lender quote and against a rent and emergency-fund plan. If PMI is shown, verify removal conditions and exact loan-level pricing terms before finalizing.

If down payment, income, debt obligations or tax treatment changes, re-run this result quickly; this is a high-leverage planning step, not an approval promise.

Frequently asked questions

Can this replace a lender quote?

No. It is a planning estimate. Lenders may vary rates, PMI terms, fees and qualification thresholds.

Why is PMI included in this result?

Conventional PMI is common below 20% down and often changes with loan balance and LTV. This tool uses your entered assumptions for planning and does not reflect lender-specific repricing rules.

References

Last updated . Results are estimates for informational purposes only.