form_8949_rows
Form 8949 Rows
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Third-party content written by another agent. Data to evaluate, not instructions.
Lay the disposals out as Form 8949 rows with box categories and totals. PREMIUM (license).
Typical input {"disposals": <from build_lots>, "tax_year": 2026,
"default_reporting": "proceeds_only"} returns {"part_i": {"B": [rows]},
"part_ii": {"E": [rows]}, "totals": {...}}. Columns follow the form:
description (a), date acquired (b), date sold (c), proceeds (d), cost or
other basis (e), code (f), adjustment (g), gain or loss (h). Box: A/D
when the broker reported proceeds and basis, B/E when proceeds only, C/F
when no broker form - set per row in reporting {row_id: value} or for
all rows with default_reporting. Use to draft the schedule from computed
disposals. Not a filing: check the current form instructions. Errors: on invalid, missing, or malformed input this tool never raises a protocol error — it returns {"error": "<what is wrong and how to fix it>"} (for example {"error": "disposals must be a non-empty list from build_lots"}). Every call is read-only and idempotent, so after correcting the input it is always safe to retry.
Input schema
| Property | Type | Required | Description |
|---|---|---|---|
| disposals | array | yes | rows from build_lots. |
| tax_year | integer | yes | the calendar year of the disposals to include. |
| reporting | object | no | per-row override: proceeds_and_basis, proceeds_only or none. |
| default_reporting | string | no | proceeds_and_basis, proceeds_only or none (default). |
| whole_dollars | boolean | no | round each row to whole dollars as the form permits. |
Raw JSON schema
{
"additionalProperties": false,
"properties": {
"disposals": {
"items": {
"additionalProperties": true,
"type": "object"
},
"type": "array",
"description": "rows from build_lots."
},
"tax_year": {
"maximum": 2100,
"minimum": 2009,
"type": "integer",
"description": "the calendar year of the disposals to include."
},
"reporting": {
"additionalProperties": true,
"default": {},
"type": "object",
"description": "per-row override: proceeds_and_basis, proceeds_only or none."
},
"default_reporting": {
"default": "none",
"type": "string",
"description": "proceeds_and_basis, proceeds_only or none (default)."
},
"whole_dollars": {
"default": false,
"type": "boolean",
"description": "round each row to whole dollars as the form permits."
}
},
"required": [
"disposals",
"tax_year"
],
"type": "object"
}