finance calculator

Piggyback Loan vs PMI

Compare a piggyback combo loan to a single loan with PMI to see monthly payments and total paid over a comparison period.

Results

Single loan amount with PMI
$450,000
PMI monthly
$188
Payment with PMI (P&I + PMI)
$3,032
First mortgage (piggyback)
$400,000
Second mortgage (piggyback)
$50,000
Piggyback monthly total
$2,931
Savings over comparison period
$6,073
Months in comparison
60

How to use this calculator

  1. Enter home price, down payment %, first/second rates, PMI rate, and term.
  2. Choose years to compare (how long you expect to keep the structure).
  3. Review monthly payments and total paid over that window for PMI vs piggyback.

Inputs explained

Second percent
Portion financed by the second mortgage (e.g., 10% for 80/10/10).
PMI rate
Annual PMI as a % of the loan; use your lender’s quote if available.

How it works

We build a single loan with PMI if down payment < 20% and compute P&I + PMI.

Piggyback splits into a first at the first-rate and a second at the second-rate; payments are summed.

Totals over the comparison period (e.g., first 5 years) show which approach costs less.

When to use it

  • Testing 80/10/10 or 80/15/5 piggyback vs paying PMI.
  • Comparing monthly payments and near-term cost if you plan to refinance later.

Tips & cautions

  • Piggyback seconds often have higher rates—adjust to match your offer.
  • If you’ll refinance or hit 20% equity soon, PMI may drop; this is a simple fixed comparison window.
  • Assumes fixed rates and constant PMI; does not model PMI removal or variable-rate seconds.
  • Ignores taxes/insurance/closing costs; focuses on payment streams.

Deep dive

See whether a piggyback mortgage or a single loan with PMI costs less by comparing payments over a chosen period.

Enter rates and loan splits to compare piggyback vs PMI monthly payments and total cost.

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