Shortage scenario calculator

Compare shortage payment options.

Compare a proposed upfront payment with spreading the shortage over the repayment period on your statement. See the cash-flow tradeoff before you call your servicer.

Future bills still need funding

Use the expected full-year amount paid through escrow.
Use the annual premium, not your monthly mortgage payment.
Include flood insurance or other bills only if your servicer pays them from escrow.

Your shortage and proposed payment

Use the shortage on your analysis. This tool does not calculate it from annual bills alone.
Replace 12 with the period on your statement or confirmed by your servicer.
Enter an amount from zero up to the shortage. Confirm availability and treatment with your servicer.

Your numbers stay in this browser tab.

Understand the numbers

Paying the shortage and lowering future bills are separate things.

A lump-sum shortage payment can change what remains to repay. It does not undo an increase in the next year’s taxes or insurance. This model keeps annual expenses and the remaining repayment period fixed so you can isolate the effect of the proposed upfront amount.

It does not choose the best use of your cash. Consider your other essential bills and savings, and confirm how your servicer applies a payment and recalculates installments. A hypothetical result is not permission to send a lower mortgage payment.

These tools provide educational estimates. They do not change your required payment or replace your mortgage servicer’s analysis. Payment status, loan terms, state law, dates and missing history can affect the official result.

Methodology source: CFPB Regulation X, § 1024.17. Read our calculation methodology.