Capital gain from a crypto sale by lot using FIFO, LIFO or HIFO, with cost basis
Capital gain from a crypto sale by lot using FIFO, LIFO or HIFO, with cost basis, proceeds and the short-term and long-term split per lot.
Answeringour last check, 2026-10-20
1 of 1checks answered this week
284 msmedian answer time
$0.01listed price per call
$0.01price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://saylorinnovations.com/api/tax/crypto-gains
| Category | Market data |
|---|---|
| Provider host | saylorinnovations.com |
| Networks | eip155:137, eip155:42161, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 0 from 0 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-20 | valid payment request | 402 | $0.01 | 284 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"lots": "[{\"date\":\"2024-01-10\",\"qty\":1,\"price\":42000},{\"date\":\"2025-03-05\",\"qty\":1,\"price\":85000}]",
"method": "hifo",
"sell_date": "2025-10-17",
"sell_price": "95000",
"sell_qty": "1.5"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"lots": {
"description": "JSON array of purchases: [{\"date\":\"YYYY-MM-DD\",\"qty\":1,\"price\":40000,\"fee\":0}]",
"type": "string"
},
"method": {
"description": "optional fifo, lifo or hifo, default fifo",
"type": "string"
},
"sell_date": {
"description": "sale date YYYY-MM-DD",
"type": "string"
},
"sell_price": {
"description": "sale price per unit",
"type": "string"
},
"sell_qty": {
"description": "quantity sold",
"type": "string"
}
},
"required": [
"lots",
"sell_qty",
"sell_price",
"sell_date"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"average_cost_per_unit": {
"description": "Cost basis divided by quantity sold",
"type": "number"
},
"cost_basis": {
"description": "Cost of the matched lots including fees",
"type": "number"
},
"long_term_gain": {
"description": "Gain on lots held longer than the threshold",
"type": "number"
},
"long_term_threshold_days": {
"description": "Days after which a gain counts as long-term",
"type": "number"
},
"lots_used": {
"description": "The purchase lots matched to the sale",
"items": {
"properties": {
"bought": {
"description": "Purchase date",
"type": [
"string",
"null"
]
},
"cost_basis": {
"description": "Cost of that quantity including fees",
"type": [
"number",
"null"
]
},
"gain": {
"description": "Gain or loss on it",
"type": [
"number",
"null"
]
},
"holding_days": {
"description": "Days held",
"type": [
"number",
"null"
]
},
"lot": {
"description": "Position of the lot in the supplied list",
"type": [
"number",
"null"
]
},
"proceeds": {
"description": "Sale proceeds attributed to it",
"type": [
"number",
"null"
]
},
"quantity": {
"description": "Quantity taken from the lot",
"type": [
"number",
"null"
]
},
"term": {
"description": "short or long",
"type": [
"string",
"null"
]
}
},
"type": "object"
},
"type": "array"
},
"method": {
"description": "Lot matching method used",
"type": "string"
},
"note": {
"description": "Plain-language caveat about how to read and use the result",
"type": "string"
},
"proceeds": {
"description": "Sale proceeds after the selling fee",
"type": "number"
},
"sell_date": {
"description": "Sale date",
"type": "string"
},
"sell_price": {
"description": "Sale price per unit",
"type": "number"
},
"sell_quantity": {
"description": "Quantity sold",
"type": "number"
},
"short_term_gain": {
"description": "Gain on lots held no longer than the threshold",
"type": "number"
},
"source": {
"description": "Where the data or formula comes from",
"type": "string"
},
"total_gain": {
"description": "Proceeds minus cost basis",
"type": "number"
}
},
"required": [
"total_gain",
"lots_used"
],
"type": "object"
},
"type": {
"const": "json",
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}