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Form 8949 Calculator

Total your Form 8949 sales for Schedule D, with wash sale adjustments, the right boxes and the $3,000 loss limit.

Updated November 4, 2026. Free, no sign-up; everything runs in your browser and nothing you type is stored.

Form 8949 and Schedule D calculator

Filing statusShort-term proceeds, column (d) ($)Short-term cost basis, column (e) ($)Short-term wash sale adjustment, code W ($)Long-term proceeds ($)Long-term cost basis ($)Long-term adjustments ($)Capital loss carryover from last year ($)

Net capital gain or loss (Schedule D)

–

–Short-term (Part I)

–Long-term (Part II)

–Loss limit

What Form 8949 is for

Form 8949 lists each sale of stock, funds, crypto and other capital assets; its totals go to Schedule D. Brokers send Form 1099-B, and from 2025 digital asset brokers send Form 1099-DA. Each transaction goes in the part and box that matches its holding period and how it was reported (IRS instructions, 2025):

Part I, short-term (held 1 year or less): Box A (basis reported to the IRS), B (basis not reported), C (no 1099). Digital assets use the new Boxes G, H and I.
Part II, long-term (more than 1 year): Box D, E, F, and J, K, L for digital assets.
If all your sales are Box A or D with no adjustments, you can skip Form 8949 and put the totals straight on Schedule D lines 1a and 8a.

Columns and wash sales

Gain or loss (column h) = proceeds (d) − cost basis (e) + adjustment (g). A wash sale (buying the same or a substantially identical security within 30 days before or after a loss sale) disallows the loss: enter code W in column (f) and add the disallowed loss back in column (g). It's added to the basis of the new shares instead.

The $3,000 loss limit and worked example

Net capital losses offset other income up to $3,000 a year ($1,500 married filing separately); the rest carries forward with no time limit. Example: a short-term sale for $20,000 with $26,000 of basis is a $6,000 loss, but $1,000 is a wash sale, so the allowed loss is $5,000. A long-term $3,000 gain nets it to a $2,000 loss, all deductible this year. Tax on gains: capital gains tax calculator; strategy: tax loss harvesting; your broker's form: 1099 B.

Common questions

What is Form 8949?

The form listing each capital asset sale; its totals go to Schedule D.

Which Form 8949 boxes are for crypto?

From 2025, boxes G, H, I (short-term) and J, K, L (long-term) for digital assets.

How much capital loss can I deduct?

$3,000 a year ($1,500 married filing separately); the rest carries forward.

What is code W on Form 8949?

A wash sale: the disallowed loss is added back in column (g).

Sources

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General information, not financial, tax or legal advice. Check important numbers with the official source before acting on them.