How to use the reverse mortgage calculator
Prepare the values for this calculation
Project reverse-mortgage balance growth from a starting balance, financed fees, monthly advances and interest rate. Use the formula below to check that it answers your question. Read the input units before transferring figures from a statement, measurement or dataset.
Enter and check each input
- Starting loan balance: enter a value at least 0. Use the unit named in the label or selected above. Do not leave this required field blank.
- Monthly borrower advance: enter a value at least 0. Use the unit named in the label or selected above. Do not leave this required field blank.
- Annual interest rate (%): enter a value at least 0 and no more than 100. Use the unit named in the label or selected above. Do not leave this required field blank.
- Projection years: enter a value at least 0 and no more than 60. Use the unit named in the label or selected above. Do not leave this required field blank.
- Upfront financed fees: enter a value at least 0. Use the unit named in the label or selected above. Do not leave this required field blank.
The input table gives a complete example. Keep units and time periods consistent across related fields.
Calculate and resolve any input error
Choose Calculate after entering the values. Changes also update the answer after a short pause. If an error appears, follow its message, correct the field and calculate again. Reset restores the example values.
Interpret the answer
Check Mortgage result first. With the unchanged example inputs, it is $369,182.45. Compare the additional metrics with the primary result; each has its own label and unit.
Compare and keep a useful result
For a controlled comparison, keep every other example input unchanged and change Starting loan balance from 100000 to 110000. The resulting Mortgage result is $388,304.29. This illustrates the equation’s response to that input, rather than a forecast of real events.
Read the chart’s axis labels and data table. A scenario curve changes one stated input while holding the others fixed; it does not add external observations. Use Download graph to save an available chart as a PNG.
Use Copy result or Download CSV to keep the answer. Share tool shares the page address without placing your input values in the URL. Recheck inputs and assumptions before using the result for a decision.
Reverse Mortgage Calculator formula
Each month interest accrues on the outstanding balance and the modeled monthly advance is added. This is a balance-growth model, not a program eligibility or proceeds quote.
Inputs and units
| Input | Format / range | Example |
|---|---|---|
| Starting loan balance | minimum 0 | 100000 |
| Monthly borrower advance | minimum 0 | 1000 |
| Annual interest rate (%) | minimum 0; maximum 100 | 6.5 |
| Projection years | minimum 0; maximum 60 | 10 |
| Upfront financed fees | minimum 0 | 5000 |
Worked example
Using the example inputs above, the mortgage result is $369,182.45.
- Mortgage result
- $369,182.45
- Projection months
- 120
- Total monthly advances
- $120,000.00
Results and assumptions
This projects loan-balance growth only. It does not determine reverse-mortgage eligibility, principal limits, insurance premiums or available proceeds.
Fix an input or unexpected result
Starting loan balance is required. Enter starting loan balance using the format and bounds in the input table. Zero and an empty field are different: use zero only if it is allowed and represents your data.
If your answer differs from the example, choose Reset and compare every field, including selected units and options. Check percentage versus decimal entry and whether values describe the same period. Round only the final displayed answer when reproducing the formula.
If a discrepancy remains, report the calculator issue with the page address, non-sensitive example inputs, actual result, expected result and a reference for your calculation.