Curve Finance: tax classification of its transactions

How Curve Finance transactions classify for US tax: 79 verified contract-level rules across 1 chain, covering swap, liquidity remove, liquidity add and more, each resolving to a category, a treatment, and a confidence score.

Example last verified 2026-08-06 against the live engine. CryptoTaxEdge Team.

79 verified rules1 chain9 categories

What Curve Finance does on-chain

Curve Finance is the stableswap AMM optimized for like-kind pairs. Its multi-asset pools mean liquidity adds and removes can involve one, several, or all pool tokens, and the LP tokens are widely staked in gauges, so LP-leg and staking shapes interleave.

Categories and house treatments

Verified Curve Finance rules map to these categories from the closed classification taxonomy. Categories flagged as grey areas expose a documented house default and the alternative position, configurable per firm.

Category	House treatment	Rules
`swap`	disposal	38
`liquidity_remove` Grey area	disposal	24
`liquidity_add` Grey area	disposal	9
`collateral_supply`	non_taxable	2
`collateral_withdraw`	non_taxable	2
`bridge_transfer`	not fixed (GAP-3)	1
`fee_payment`	expense	1
`staking`	non_taxable	1
`vesting`	income	1

Liquidity legs: house default disposal Grey area

Across the 33 verified Curve Finance liquidity rules, the house default treats each add or remove as a disposition of the assets exchanged for the pool position. The continuity-of-position alternative, under which nothing is realized because the depositor keeps the same economic exposure through Curve Finance, is exposed next to every liquidity verdict and the firm's chosen position is applied consistently across the book.

A real classification

Real transaction, replayed against the live engine

POST /v1/classify { "chain": "ethereum", "hash": "0x00069681728cde3d7e36aa4d1ef2e0e2e4924e16414c25884407e74e22aacd37" }

{
  "api_version": "v1",
  "hash": "0x00069681728cde3d7e36aa4d1ef2e0e2e4924e16414c25884407e74e22aacd37",
  "chain": "ethereum",
  "category": "swap",
  "treatment": "disposal",
  "taxable": true,
  "confidence": 85,
  "needs_review": false,
  "ledger_action": "Trade",
  "protocol": "Curve Finance",
  "description": "Token swap via Curve Finance; a taxable disposition under IRC §1001.",
  "review_note": null,
  "grey_area": null,
  "assets": {
    "sent": [
      {
        "symbol": "CRV",
        "amount": "5353.113977",
        "decimals": 18,
        "action": "transferred",
        "token_address": "0xd533a949740bb3306d119cc777fa900ba034cd52",
        "token_name": "Curve DAO Token",
        "to": "0x971add32ea87f10bd192671630be3be8a11b8623"
      },
      {
        "symbol": "cvxCRV",
        "amount": "28078.415132",
        "decimals": 18,
        "action": "transferred",
        "token_address": "0x62b9c7356a2dc64a1969e19c23e4f579f9810aa7",
        "token_name": "Convex CRV",
        "to": "0x971add32ea87f10bd192671630be3be8a11b8623"
      }
    ],
    "received": [
      {
        "symbol": "cvxcrv-crv-f",
        "amount": "33116.663141",
        "decimals": 18,
        "action": "received",
        "token_address": "0x971add32ea87f10bd192671630be3be8a11b8623",
        "token_name": "Curve.fi Factory Plain Pool: cvxCrv/Crv",
        "from": "0x0000000000000000000000000000000000000000"
      }
    ],
    "gas": null
  }
}

Verbatim wire response from the live engine. Last verified 2026-08-06 by live replay. Check any transaction yourself in the Classification Explorer.

Verified rules

Behind this page sit 79 verified rules for Curve Finance. Each one binds a specific contract interaction on a specific chain to a category and treatment, with a confidence band earned from repeated on-chain observation and cross-source agreement. Rule coverage by chain: ethereum (79). A small illustrative sample:

Chain	Category	Confidence
ethereum	`liquidity_add`	low
ethereum	`swap`	high
ethereum	`liquidity_remove`	high
ethereum	`staking`	high
ethereum	`bridge_transfer`	high

Illustrative sample of the 79 verified rules behind this page: the full mappings are served through the API.

Limitations

What this page does not decide. Coverage reflects the verified Curve Finance contract set on the chains shown; deployments or peripheral contracts outside that set route to review rather than being guessed. Confidence is a corroboration signal, not an accuracy percentage, and grey-area categories are positions to be set at the firm level, not settled law. Chains: ethereum.

Classify a transaction

Go deeper: the classification taxonomy · how classification works · canonical wire examples · methodology

Transaction types on this protocol: Swap · Liquidity add / remove · Bridge

Related protocols: Camelot V3

Frequently asked questions

What tax treatment does this page document?

House treatment follows the CryptoTaxEdge Classification Standard. Categories with no fixed mapping (GAP-3) tell you to read the treatment field on the record rather than infer it from the category name.

Where is the closed vocabulary published?

The versioned Classification Standard at https://cryptotaxedge.com/standard/ enumerates emitted categories and the five-treatment enum. This encyclopedia page is a worked example on top of that Standard.

Are the wire examples still current?

Yes. Each example is verbatim engine output, re-verified on a daily replay against the live engine.

Not tax advice. CryptoTaxEdge is software, not a licensed tax advisor. Classifications and the treatments described here are informational only; verify results and consult a qualified tax professional before filing. IRC section references are general framing. Curve Finance is a third-party protocol; CryptoTaxEdge is not affiliated with it.