Escrow Shortage Calculator
Turn an escrow shortage into a new monthly payment — the higher escrow to refill the account plus the ongoing catch-up spread over 12 months.
How it works
Catch-up = shortage ÷ spread months · New escrow = current escrow + annual rise ÷ 12 · New payment = P&I + new escrow + catch-up
An escrow shortage happens when property taxes or insurance rise and your escrow account cannot cover the higher bills. Your servicer both raises the ongoing escrow to match the new bills and adds a temporary catch-up charge to refill the account, usually spread over 12 months. That is why the payment can jump twice: a permanent increase plus a temporary one that ends once the shortage is repaid.
Worked example
A $1,200 shortage spread over 12 months adds $100/mo. If taxes also rise $600/year, the base escrow climbs $50/mo. On top of a $1,600 P&I and $500 escrow, the new payment is about $2,250 — and drops roughly $100 once the shortage clears.
Frequently asked questions
Why did my mortgage payment go up if my rate is fixed?
A fixed rate only fixes principal and interest. The escrow portion changes whenever your property taxes or homeowners insurance change, which can move the total payment up or down every year.
Can I pay the escrow shortage in one lump sum?
Usually yes. Paying the shortage in full removes the catch-up charge, but your ongoing escrow may still rise to cover the higher tax and insurance bills going forward.
What is an escrow cushion?
Servicers may hold up to two months of escrow payments as a buffer, allowed under federal rules. A larger required cushion can increase a shortage and the resulting payment bump.
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Educational estimate, not financial advice. Confirm figures with your lender or a licensed professional.