Open the tool
Give a simple gains sketch so you see how proceeds minus basis behaves before you export exchange CSVs to real tax software.
Launch Capital Gains Estimator →Purpose
Give a simple gains sketch so you see how proceeds minus basis behaves before you export exchange CSVs to real tax software.
When to use it
- You want a ballpark gain/loss on a closed lot
- You are learning cost-basis vocabulary
- You need a disclaimer-heavy napkin calc on mobile
- You are not treating this as a filing tool
How to use it
- Enter cost basis and proceeds. Use your records for what you paid and what you received.
- Review gain or loss. Read the sketch output as educational only.
- Check local rules. Holding periods, wash sales, and income vs capital treatment vary by country.
- Use proper software. File with tools and advisors that support your jurisdiction.
Benefits
- Fast vocabulary for basis vs proceeds
- No account upload of full history
- Pairs with portfolio cost basis tracking
- Explicit non-advice framing
Pitfalls to avoid
- Not a tax engine
- Ignores lots, fees, airdrops, and income events unless you encode them
- Jurisdictions differ wildly
- Never file from this alone
Purpose and hard limits
CryptonicTools keeps this helper local and simple on purpose. It is for intuition, not compliance. Pair with the portfolio tracker for living cost basis notes, then move to dedicated tax products.
Related links
Updated 2026-09-09. Educational only — not financial advice.