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 pilot See 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.

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.

AI Chat

Your crypto tax copilot

Ask general questions about crypto tax law or analyze an account's transactions.

Open full chat

Live preview

Based on the federal finance ministry's 6th March 2025 letter

Ask about German crypto tax laws, holding periods, swaps, fees, or paste an Ethereum wallet address for context.

Roadmap

Coverage expansion

Starting focused. Expanding based on customer demand.

Exchanges

Chains

Jurisdictions

Q1 2026

Live now

Coinbase

Ethereum

Germany

Q2 2026

Kraken

Bitstamp

Bitcoin

Solana

United States

Q3 2026

Binance

Q4 2026

United Kingdom

France

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

Pay per transaction. Scale to millions.

Buy transaction classification capacity. Plans only change your rate per 1,000 transactions.

How capacity pricing works

Annual billing with monthly capacity commits. Additional usage keeps the same tier rate.

Every classified transaction maps to one pricing unit.
Your monthly minimum buys a clear bucket of transaction capacity.
Plans only change your price per 1,000 classified transactions.
Additional usage auto-scales at the same tier rate instead of jumping in blocks.
API access, audit trails, AI explanations, and workspaces are included across tiers.
Enterprise adds governance, procurement, and rollout support, not a different pricing model.

Build

Teams validating their first tax workflow

€5.90

per 1,000 classified transactions

A €590 monthly minimum buys 100,000 classified transactions and keeps pricing explicit from day one.

Monthly minimum€590

Included capacity100,000 tx / month

Additional usage€5.90 / 1k tx

Onboarding with TaxMaxi Founder
Jurisdiction-specific reasoning + source citations
Exportable memos and review history
Email support

Talk about Build

Scale

Most common

Companies depending on crypto tax as core product feature

€1.95

per 1,000 classified transactions

A €1,950 monthly minimum buys 1,000,000 classified transactions for teams operating tax workflows at production scale.

Monthly minimum€1,950

Included capacity1,000,000 tx / month

Additional usage€1.95 / 1k tx

Priority support
Shared review queues + playbooks
Sandbox and production environments
Webhook + integration support

Talk about Scale

Enterprise

Exchanges, banks, and regulated platforms

Custom

committed usage pricing

For institutions that need governance, rollout support, and negotiated unit economics across teams or markets.

Monthly minimumCommitted usage

Included capacityCustom

Additional usagePre-negotiated rate

SSO / SCIM
SLA + dedicated onboarding
Custom connectors and workflows
Private deployment options

Plan Enterprise

Linear usage economics

The core unit is classified transactions. Monthly minimums buy capacity, and extra volume keeps the same per-1,000 rate.

Usage line item	Build	Scale	Enterprise
Effective rate	€5.90 / 1k tx	€1.95 / 1k tx	Custom committed rate
Monthly minimum	€590	€1,950	Annual commit
Included capacity	100,000 tx / month	1,000,000 tx / month	Custom
Autoscaling	Continue at tier rate	Continue at tier rate	Pre-agreed expansion

Get started

Integrate crypto tax compliance today

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

Request pilot