Pressure-test these parts of the decision
Obtain the lender's actual PMI quote for the chosen down payment.
What event and evidence allow borrower-requested PMI cancellation?
Compare complete monthly housing costs, not PMI alone.
How would the rate, closing costs or lender credit change with the larger down payment?
Record how much cash remains after each down-payment option.
Who services the loan and how is a cancellation request submitted?
Compare mortgage insurance with the cost of waiting
The choice is not simply PMI or no PMI. Compare the complete loan, cash remaining, time needed to save and housing alternative during that time.
Compare complete monthly costs
Include principal, interest, property taxes, homeowners insurance, association dues and PMI. PMI is only one part of the change caused by a smaller down payment.
Use an actual mortgage-insurance quote. Premiums and cancellation paths depend on the loan and borrower facts. Obtain the lender's current amount, include it in the full housing payment and identify the written conditions for ending the charge.
After comparing the PMI scenarios, stress-test the complete housing payment with taxes, insurance, dues, maintenance and a safety buffer included.
Value retained cash honestly
Cash kept after closing can cover repairs and income shocks. It also has an opportunity cost. Do not assume investment returns or home appreciation as guaranteed offsets.
Value the cash you keep. A smaller down payment can preserve repair and emergency funds. A larger one can reduce the balance and insurance cost. Show cash remaining after closing beside the monthly difference instead of treating all available cash as down payment.
Map the exit conditions
For many conventional loans, cancellation rights depend on balance and property value conditions. Read the servicer’s process and distinguish scheduled cancellation from a borrower-requested review.
Run a neutral waiting case. Compare buying now with waiting long enough to reach the larger down payment without assuming price appreciation or investment gains. Add rent or other housing cost, savings pace and transaction timing explicitly.
Run a no-appreciation case
Test the decision with flat home prices and ordinary maintenance. A plan that depends entirely on rapid appreciation is speculation, not a robust affordability case.
Assumptions that can break the plan
- What event and evidence allow borrower-requested PMI cancellation?
- How would the rate, closing costs or lender credit change with the larger down payment?
- Who services the loan and how is a cancellation request submitted?
PMI Break-Even Calculator uses the values from this review in a working calculation.
Inputs to verify before trusting the result
- Obtain the lender's actual PMI quote for the chosen down payment.
- Compare complete monthly housing costs, not PMI alone.
- Record how much cash remains after each down-payment option.
- Read the conditions and process for PMI cancellation or termination.
- Run a flat-price case without assumed investment returns.
Record the stress-test inputs
A result is useful only when its assumptions can be checked. Record the source and date for each input, then rerun the decision when an amount, rate, horizon or household constraint changes.
For this decision, the first working threshold is concrete: Obtain the lender's actual PMI quote for the chosen down payment.; Compare complete monthly housing costs, not PMI alone.; Record how much cash remains after each down-payment option..
Read those checks beside the sections on Compare complete monthly costs, Value retained cash honestly, Map the exit conditions. Completing one item does not cure a mismatch elsewhere, so leave the decision open until the record is internally consistent.
Assign every unresolved row an owner and a date for receiving the missing document so it cannot disappear in the rush to sign.
| Input or limit | Source to keep | Assumption to challenge |
|---|---|---|
| Obtain the lender's actual PMI quote for the chosen down payment. | Copy the dollar amount or rate, its source page, what it includes and the condition that can change it. | What event and evidence allow borrower-requested PMI cancellation? |
| Compare complete monthly housing costs, not PMI alone. | Copy the dollar amount or rate, its source page, what it includes and the condition that can change it. | How would the rate, closing costs or lender credit change with the larger down payment? |
| Record how much cash remains after each down-payment option. | Copy the dollar amount or rate, its source page, what it includes and the condition that can change it. | Who services the loan and how is a cancellation request submitted? |
| Read the conditions and process for PMI cancellation or termination. | Record the exact date, lead time, delivery rule and proof that notice was sent or received. | What event and evidence allow borrower-requested PMI cancellation? |
| Run a flat-price case without assumed investment returns. | Copy the dollar amount or rate, its source page, what it includes and the condition that can change it. | How would the rate, closing costs or lender credit change with the larger down payment? |
Keep the base case and downside case together. The decision margin is the distance between them, not the apparent precision of one calculator result.