What is cost basis in crypto?

Cost basis = what you paid to acquire the crypto (purchase price + fees). When you sell, capital gain = sale proceeds − cost basis. Tracking cost basis across many transactions and wallets is one of the biggest challenges in crypto tax compliance.

Can I offset crypto losses against gains?

Yes. Crypto losses can offset crypto gains dollar-for-dollar. Excess losses offset up to $3,000 of ordinary income per year. Additional losses carry forward to future years. Unlike stocks, crypto has no wash-sale rule as of 2024 (you can sell and immediately rebuy).

What is DCA and how does it affect my cost basis?

Dollar-cost averaging means buying fixed dollar amounts at regular intervals. Each purchase has a different per-coin cost. Your average cost basis = total dollars invested ÷ total coins acquired. Most exchange tax reports calculate this for you.

Which crypto exchanges provide tax forms?

Coinbase, Kraken, and Gemini provide 1099 forms (1099-B or 1099-DA) for qualifying US users. Decentralized exchanges (DEXs) and non-custodial wallets don't send forms — you must track manually or use crypto tax software like Koinly, CoinTracker, or TaxBit.

Crypto Portfolio Calculator — Multi-Coin P&L Tracker | KalkWise

By the KalkWise Editorial Team Reviewed for accuracy Updated June 2026

What is the crypto portfolio calculator — multi-coin p&l tracker?

In short

Crypto portfolio P&L = sum of (current value − cost basis) across all holdings. If you own 0.5 BTC purchased at $30,000 (cost $15,000, now worth $22,500 at $45,000) and 10 ETH at $1,800 (cost $18,000, now $22,000 at $2,200), total portfolio = $44,500, cost $33,000, P&L = +$11,500 (+34.8%).

Calculates total portfolio value, total cost basis, profit or loss, and overall percentage P&L across multiple cryptocurrency holdings.

How to use this calculator

1Enter the quantity of each coin you hold.
2Enter the average purchase price (cost basis) for each coin.
3Enter the current price for each coin.
4The calculator totals up your P&L across all positions.

The formula

total P&L=Σ(qty×current price)−Σ(qty×buy price)

P&L %=total P&Ltotal cost basis×100

Cost Basis = Σ(Q × P_buy); Current Value = Σ(Q × P_now); P&L = Value − Cost; P&L % = P&L ÷ Cost × 100

Q: — Quantity of coins
P_buy: — Average purchase price
P_now: — Current price

Worked example

The scenario

1 BTC at $40,000 purchase ($40K cost, now $50K), 5 ETH at $2,000 ($10K cost, now $12,500).

gives

The result

Total cost = $50,000. Current value = $62,500. P&L = +$12,500 (+25%).

Common use cases

Track overall crypto portfolio performance.
Calculate cost basis for tax reporting.
Identify best and worst performing holdings.
Evaluate when to rebalance or take profits.

Limitations & assumptions

Does not account for trading fees, which can significantly impact P&L on frequent trades.
Cost basis tracking for DCA (dollar-cost averaging) requires weighted average or FIFO/LIFO accounting.
Crypto is highly volatile — results can change dramatically within hours.
Tax treatment varies by holding period (short-term vs. long-term capital gains) and jurisdiction.

Frequently asked questions

Crypto is treated as property. Selling or exchanging crypto triggers a capital gains event. Short-term gains (held < 1 year) are taxed as ordinary income (up to 37%). Long-term gains (held > 1 year) are taxed at 0%, 15%, or 20%. Use Form 8949 to report each transaction.

Disclaimer: KalkWise calculators are provided for general informational and educational purposes only and do not constitute financial, investment, tax, or legal advice. Results are estimates based on the figures you enter and the assumptions described above. Actual outcomes will vary. Consult a qualified professional before making financial decisions.

Coin	Quantity	Buy Price ($)	Current Price ($)

Crypto Holdings