Short Sale Deficiency Calculator
Calculate the deficiency balance after a short sale: mortgage balance minus net sale proceeds. Adjusts for state anti-deficiency laws, junior liens, and projected 1099-C cancellation-of-debt income (taxable unless insolvent or qualified principal residence exclusion applies under IRC §108).
What Is a Short Sale Deficiency?
Short sale deficiency = unpaid mortgage balance minus net sale proceeds after closing costs. Example: $300K mortgage, $250K sale price, $20K closing costs = $70K deficiency. The lender may pursue this deficiency depending on state law and the short-sale-approval letter. Negotiation tip: insist the approval letter contain explicit 'full satisfaction' language waiving the deficiency.
Anti-Deficiency States — California, Arizona, Others
California — purchase-money loans on 1-4 unit owner-occupied (§580b CCP) and short sale of any 1-4 unit (§580e) have no deficiency. Arizona — purchase-money loans on residential ≤2.5 acres protected (§33-729). Nevada — capped deficiency, NRS 40.451. North Carolina — purchase-money mortgages protected (§45-21.38). Texas — strict notice, fair-market-value offset (§51.005). Florida — full deficiency available, but 1-year SOL for residential (§95.11). Confirm with state-specific real-estate attorney.
1099-C Cancellation of Debt and IRC §108 Exclusions
Lender forgives deficiency → issues IRS Form 1099-C → forgiven amount is generally taxable as ordinary income. Exclusions under IRC §108: (1) bankruptcy discharge — fully excluded; (2) insolvency — excluded to extent of insolvency on day before discharge; (3) qualified principal residence indebtedness — formerly excluded up to $750K (Mortgage Forgiveness Debt Relief Act) extended by P.L. 117-328 through 2025, then OBBB 2025 extension; verify current status. (4) qualified farm/real-business indebtedness.
Junior Liens and Second Mortgages
Second mortgages and HELOCs are usually 'recourse' — full deficiency pursuable even in anti-deficiency states. CA §580e covers short sale of any 1-4 unit residential including junior liens. AZ §33-729 applies only to purchase-money seniors. Always confirm: (1) was the second mortgage purchase-money or cash-out? (2) Does state anti-deficiency law cover juniors? (3) Did the short-sale approval letter waive the junior lien? Cash-out HELOCs face deficiency suits even after short sale in most states.
Sources: IRC §108 (Cancellation of Debt); CCP §580b/§580e (CA); NRS 40.451 (NV); A.R.S. §33-729 (AZ); IRS Pub 4681. Last updated: May 2026. Not legal advice.