The private Bitcoin tax calculator with Specific ID. Self-custody your tax data.
Same tax calculations. No subscription. No surveillance.
| Sovereign Tax | CoinTracker | Koinly | |
|---|---|---|---|
| Price | $100 From $59 once | $59–$599/yr | $49–$279/yr |
| Data stays on your device | ✓ | ✗ | ✗ |
| No account required | ✓ | ✗ | ✗ |
| Form 8949 + TurboTax | ✓ | ✓ | ✓ |
| FIFO + Specific ID | ✓ | FIFO only | FIFO only |
| Specific ID with tax optimization | ✓ | ✗ | ✗ |
| Charitable donation tracking | ✓ | ✗ | ✗ |
| Encrypted on device | ✓ | ✗ | ✗ |
| Works fully offline | ✓ | ✗ | ✗ |
| Source code reviewable | ✓ | ✗ | ✗ |
| Data breach history | No cloud data to breach | 3 breaches (as of early 2026) | 1 breach (as of early 2026) |
| Subscription required | No | Yes | Yes |
| Full comparison → | Full comparison → |
Selling 1 BTC purchased at $10,000 when the price is $95,000:
Example only — actual results depend on your tax situation. FIFO sells your oldest, cheapest Bitcoin first — maximizing your taxable gain. Specific ID lets you pick higher-cost lots, cutting the gain dramatically. The difference compounds with every sale.
Competitors charge every year. You keep paying for the same data.
| Year 1 | Year 3 | Year 5 | |
|---|---|---|---|
| Sovereign Tax | $59 | $59 | $59 |
| CoinTracker | $199 | $597 | $995 |
| Koinly | $169 | $507 | $845 |
CoinTracker and Koinly lock your tax history behind annual paywalls. Miss a renewal and lose access to your own records. Sovereign Tax is one payment — your data, your device, forever.
Most tax software uses FIFO — selling your oldest Bitcoin first. That's often your cheapest Bitcoin, which means the biggest taxable gain. Sovereign Tax gives you Specific Identification — you choose exactly which lots to sell.
✨ One-Click Optimize
Don't want to pick lots manually? Hit Optimize and the algorithm does it for you — scoring every lot by its estimated tax impact, accounting for short-term (37%) vs. long-term (15%) rates. It picks losses first, then the smallest gains, automatically minimizing your tax bill.
A single sale of 1 BTC with the right lot selection may save hundreds to thousands of dollars in taxes compared to FIFO. The difference compounds with every sale you make.
Already imported your trades? Click Optimize All and the engine re-assigns every sell transaction for the year to the tax-optimal lots — automatically. No manual lot picking required.
Before applying, you see a side-by-side comparison: FIFO gain/loss vs. Optimized gain/loss, with your estimated savings in green. Review it, then apply with one click.
When you donate appreciated Bitcoin directly to a qualified charity, you may owe zero capital gains tax on the appreciation — and you may be able to deduct the full fair market value. It's one of the most powerful tax strategies in crypto, and most major crypto tax platforms don't track this.
Sovereign Tax tracks every donation as a proper disposal — consuming the correct lots, recording FMV at the time of donation, and generating Form 8283 data for your non-cash charitable contribution deduction.
Donating 1 BTC bought at $10,000 when it's worth $100,000? You may avoid up to $90,000 in capital gains and deduct the full $100,000. Selling first and donating cash could cost up to $33,300 in taxes. Example only — actual results depend on your tax situation.
They all require you to upload your complete financial history to their cloud. Sovereign Tax solves the same problem without any of the risk.
Every major crypto tax platform requires full transaction history uploads. Your entire financial life, stored on infrastructure you don't control.
They charge you annually for the same data. Miss a renewal and lose access to your own records. Your tax history, locked behind a paywall.
Your data stays on your device, encrypted with AES-256. No accounts. No cloud. No tracking. We have no access to your data.
Every major crypto tax platform stores your financial data on their servers. When they get hacked — and they have — your transaction history, balances, and identity are exposed.
Not because we have better security than them. Because there's nothing to hack. We don't have your data. Period.
Most people discover their capital gains tax after filing. Sovereign Tax lets you simulate any sale and see the exact tax impact instantly — which lots get used, the holding period, and whether it's short-term or long-term.
Real screenshots. Your data never leaves your device.
Track holdings across every exchange with real-time valuations and per-lot cost basis.
Generate IRS-ready Form 8949 reports. Export as PDF, CSV, or TurboTax TXF. One-click Optimize All for tax-optimal lot selection.
FIFO vs. Optimal Specific ID side-by-side. See exactly how much you save with one-click optimization.
Analyze tax history across years. Spot trends and plan ahead with lifetime summaries.
Preview exact tax consequences before selling. See which lots get used.
Identify tax-loss harvesting opportunities to offset capital gains.
See when each lot matures to long-term and the tax savings that come with it.
No signup. No API keys. No waiting for syncs.
Drop your exchange CSVs. Auto-detects Coinbase, Kraken, Gemini, and 10+ formats instantly.
Use FIFO or Specific Identification. Pick the method that minimizes your tax bill.
Download Form 8949 PDF, TurboTax TXF, or CSV. Hand it to your CPA or file yourself.
Your financial data is encrypted on your device and never transmitted anywhere. No accounts, no telemetry, no exceptions.
We don't have your data. We don't want your data. We built this so you'd never have to share it.
Every line of code is publicly available on GitHub. Read the source, audit the encryption, and confirm that your data stays on your device.
Review exactly how your data is encrypted, stored, and processed.
No obfuscation, no minified secrets, no phone-home calls.
Clone the repo and compile from source. Verify it matches exactly.
Calculate to your advantage. Plan ahead. Export and file.
Form 8949 PDF & CSV, TurboTax TXF import, and Schedule D summary. Short and long-term gains separated automatically.
FIFO and Specific Identification — the only two methods permitted by the IRS. Manual lot selection lets you optimize every sale.
Import CSVs from Coinbase, Kraken, Gemini, Coinbase Pro, Celsius, Nexo, and more. Auto-detects columns and formats.
Mining and rewards automatically classified as ordinary income. Schedule 1 ready.
Tax-loss harvesting dashboard, lot maturity tracker, multi-year analysis, and sale simulator to plan before tax season.
Donate BTC to charity with full lot tracking. Zero-proceeds disposal per IRC §170, FMV recording, and Form 8283 CSV export.
Password-protected backup files with integrity verification. Your data travels with you — not on our servers.
Starting tax year 2025, the IRS requires per-wallet cost basis tracking for cryptocurrency. Sovereign Tax supports both universal and per-wallet cost basis modes with a single toggle — so you're ready from day one.
Everything you need to know before buying.
One purchase. No subscription required. No data collection.
30-day refund policy — not happy? Email us and we'll make it right.