Crypto Tax Calculator 📊

A comprehensive cryptocurrency tax calculation engine. Import your trades, select your jurisdiction, and generate professional tax reports.

Workflow Overview

[Import CSV] → [Parse Trades] → [Match Cost Basis] → [Calculate Gains] → [Apply Tax Rules] → [Generate Report]
     ↓              ↓                  ↓                    ↓                   ↓                    ↓
  Validate      Normalize         FIFO/LIFO/AVG        Short vs Long       US/UK/AU/CN         HTML + CSV
  Format        Currencies        Cost Matching         Term Gains          Rate Tables          Tax Report

Step 1: Prepare Your Data

Your CSV must have these columns (order doesn't matter):

Column	Required	Format	Example
date	✅	YYYY-MM-DD HH:MM:SS	2024-03-15 14:30:00
type	✅	buy/sell/swap/transfer	buy
asset	✅	Symbol	BTC
amount	✅	Decimal number	0.5
price_usd	✅	USD value per unit	65000.00
fee_usd	❌	Fee in USD	2.50
exchange	❌	Exchange name	Binance
tx_hash	❌	Transaction hash	0xabc...

Step 2: Choose Your Method

# FIFO — First In, First Out (most common, required in some jurisdictions)
bash scripts/crypto-tax-calc.sh calculate --input trades.csv --method fifo --country US

# LIFO — Last In, First Out (can minimize taxes in rising markets)
bash scripts/crypto-tax-calc.sh calculate --input trades.csv --method lifo --country US

# Average Cost — Weighted average (required in UK, simpler calculation)
bash scripts/crypto-tax-calc.sh calculate --input trades.csv --method average --country UK

Step 3: Select Jurisdiction

🇺🇸 United States

• Short-term gains (<1 year): Taxed as ordinary income (10%-37%)
• Long-term gains (>1 year): 0%, 15%, or 20%
• Wash sale rules: Currently not enforced for crypto (may change)
• Form 8949 generation supported

🇬🇧 United Kingdom

• Capital Gains Tax: 10% (basic) / 20% (higher rate)
• Annual exempt amount: £6,000 (2024/25)
• Must use share pooling (average cost)
• HMRC-compatible report format

🇦🇺 Australia

• CGT discount: 50% for assets held >12 months
• Marginal tax rates apply (19%-45%)
• Personal use asset exemption <$10,000
• ATO-compatible output

🇨🇳 China

• Individual income tax: 20% on gains
• Currently ambiguous regulation
• Report provides gain calculations for reference

Step 4: Generate Report

The tool outputs:

• HTML Report — Visual summary with charts, tables, per-asset breakdown
• CSV Export — Machine-readable gain/loss per trade
• Summary JSON — Totals for integration with other tools

Full Command Reference

# Calculate taxes
bash scripts/crypto-tax-calc.sh calculate --input FILE --method METHOD --country CODE [--year YEAR]

# Validate CSV format
bash scripts/crypto-tax-calc.sh validate --input FILE

# Show summary only (no report file)
bash scripts/crypto-tax-calc.sh summary --input FILE --method METHOD

# Merge multiple exchange CSVs
bash scripts/crypto-tax-calc.sh merge --inputs "file1.csv,file2.csv" --output merged.csv

# Compare methods side-by-side
bash scripts/crypto-tax-calc.sh compare --input FILE --country CODE

Important Disclaimers

⚠️ This tool is for informational purposes only. It is NOT tax advice. Consult a qualified tax professional for your specific situation.

⚠️ Tax laws change frequently. Always verify current rates and rules with your local tax authority.