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SSDI back pay

Partly taxable

Can You Write Off SSDI Back Pay?

Short answer: A lump-sum SSDI back payment can be taxable, but the lump-sum election lets you figure it as if received in the earlier years.

Up to 85% of benefits are taxable once income passes $25,000 single / $32,000 joint.

Records to keep: Keep receipts, statements (1098, 1098-T, 1099, W-2G), and a note of what each cost was for. Compare itemizing to the 2026 standard deduction before you claim.