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ENDE

Add crypto tax compliance in a day

Take the crypto tax burden off your users' shoulders with the TaxMaxi API.
For wallets, exchanges, and tax advisory firms.

# Install the TaxMaxi CLI

$ npm i -g tax

# Calculate your crypto taxes

$ tax vitalik.eth

Request pilotSee how it works
REST API

One unifiying API

Seamlessly integrate crypto tax calculations into your product with a single REST API.

Normal Tx
{
"hash": "0x0ff3…2326",
"from": "0xc3ae…eb31",
"to": "0xc02a…6cc2",
"value": "250000000000000000",
"functionName": "deposit()"
}
ERC-20 Transfer
{
"hash": "0xf394…e9c9",
"from": "0x74de…6631",
"tokenSymbol": "TURBO",
"value": "2078725968…7494",
"functionName": "swap(…)"
}
Internal Tx
{
"hash": "0xa52d…d9ea",
"from": "0x1522…e428",
"to": "0xc3ae…eb31",
"value": "500000000000000000",
"type": "call"
}
Unified Ledger
DEPOSIT0.25 ETH → WETH
SWAP2,078.7 TURBO received
TRANSFER0.5 ETH received

Step 01

Ingest raw activity and normalize it into one ledger

TaxMaxi translates raw activity from blockchains and exchanges into a unified ledger.

Ethereum
Bitcoin
Solana
Binance
Coinbase
Kraken
TaxMaxi
Germany
Austria
Switzerland
France
USA
United Kingdom

Step 02

Map normalized transactions to tax events of different jurisdictions

Ledger entries are mapped to tax events of different jurisdictions. Drill down into any tax event to see the rule applied, the evidence, and the reasoning path.

Analysis complete · 3 optimizations found

Hold 47 more days

2.5 ETH becomes tax-free under §23 EStG

+€1,204

Harvest SOL loss

Realize -€2,412 loss to offset current gains

+€723

Deduct gas fees

89 transactions × avg €1.02 in gas

+€91
Total savings potential
€2,018

Step 03

Provide users with tax optimization recommendations

Unlock financial insights based on a user's positions in a given jurisdiction.

# Install the TaxMaxi CLI

$ npm i -g tax

# Authenticate

$ tax login

Step 01

Install the CLI globally

Use pnpm/npm/bun and authentiate once using your TaxMaxi Account

# Connect any exchange or onchain wallet

$ tax coinbase connect

# Sync your sources

$ tax coinbase sync

# Calculate taxes for a given year

$ tax coinbase calculate --year 2025

Step 02

Sync data from exchanges and blockchains

Connect with any exchange or onchain wallet address with a single command.

# Sync → calculate → LLM summary → Slack

$ REPORT=$(tax sync --all --quiet \

&& tax calculate --year 2025 --jurisdiction germany --json)

$ claude -p "Tax report: $REPORT. \

Summarize as a weekly Slack digest." \

| jq -Rs '{text: .}' \

| curl -s -H "Content-Type: application/json" \

-d @- "$SLACK_WEBHOOK"

# Run every Monday at 9am UTC

$ (crontab -l; echo "0 9 * * 1 ./workflow.sh") | crontab -

Step 03

Empower your agents with the TaxMaxi CLI

AI agents are increasingly being used for automating tasks. Crypto tax calculations are no exception.

CLI

Crypto taxes, right from your terminal

Use the TaxMaxi CLI to integrate it into your agentic workflows.

Roadmap

Coverage expansion

Starting focused. Expanding based on customer demand.

Q1 2026

Live now

Exchanges

Coinbase

Chains

Ethereum

Jurisdictions

Germany

Q2 2026

Exchanges

Kraken
Bitstamp

Chains

Bitcoin
Solana

Jurisdictions

United States

Q3 2026

Exchanges

Binance

Q4 2026

Jurisdictions

United Kingdom
France

Roadmap reflects current plans. Timelines may shift based on demand and regulatory changes.

Pricing

Infrastructure pricing

We work with partners through structured pilots. Pricing scales with transaction volume.

Pilot

Evaluate with real data

Freepilot period
  • Up to 1,000 transactions
  • Full API access
  • Germany jurisdiction
  • Direct founder support
Request pilot

Growth

Per-transaction pricing

Customvolume-based
  • Unlimited transactions
  • Full API + webhooks
  • Multi-jurisdiction (as available)
  • Volume discounts
  • SLA included
Get pricing

Enterprise

Annual agreement

Contactcustom terms
  • Everything in Growth
  • Dedicated support
  • Custom integrations
  • On-premise option
  • Compliance review
Contact us

All engagements start with a pilot. Full API documentation and integration support included.

Get started

Integrate crypto tax compliance today

We work with tax firms, wallets, exchanges, and neobanks building compliant crypto products. Start with a pilot.

Request pilot