Crypto Portfolio Rebalancing Calculator

Enter your current holdings and target allocation to see the exact buys and sells needed to rebalance your crypto portfolio. Educational, not investment advice. Runs in your browser.

Targets total 100%
Portfolio value: $10,000
BTC
now 60.0% → target 50% ($5,000)
Sell $1,000
ETH
now 30.0% → target 30% ($3,000)
hold
Stablecoins
now 10.0% → target 20% ($2,000)
Buy $1,000

For each asset, target value = portfolio total × target %, and the action is target value − current value: a positive figure means buy, negative means sell. The buys and sells net to zero (you are only reshuffling existing value). Rebalancing trades may trigger taxable events and fees, which are not modeled here. Educational, not investment advice. Everything runs in your browser.

About this tool

Rebalancing is the discipline of periodically bringing a portfolio back to its intended allocation. Over time, the assets that rise become a larger share of the portfolio and the laggards a smaller one, so the actual mix drifts away from the targets you set — and in volatile markets like crypto, that drift can be dramatic. Rebalancing sells some of what has grown and buys more of what has lagged to restore the plan, which mechanically enforces 'sell high, buy low' and keeps risk from concentrating in whatever has run up most. This calculator makes the arithmetic concrete. You enter each asset's current dollar value and its target percentage; the tool sums your total portfolio value, computes each asset's target dollar value as total × target %, and reports the difference between target and current as a specific buy or sell amount. By construction the recommended buys and sells net to zero, because rebalancing only reshuffles the value you already hold — no new money is required (though you can also rebalance by directing fresh contributions toward underweight assets, which avoids selling). Two practical frictions the tool flags but does not model: selling appreciated crypto is usually a taxable event, and every trade may incur exchange fees, so very frequent or tiny rebalances can cost more than they are worth. Common approaches are to rebalance on a schedule (say quarterly) or when an asset drifts beyond a set threshold from its target. This is educational and explicitly not investment advice. Everything runs in your browser; nothing is uploaded.

How to use it

  • List each asset with its current dollar value.
  • Set the target percentage for each — they should add up to 100%.
  • Add or remove assets as needed.
  • Read the buy or sell amount for each asset; the trades net to zero.

Frequently asked questions

How does portfolio rebalancing work?
You set target percentages for each asset. The tool calculates each target's dollar value (portfolio total × target %) and compares it to the current value. The gap is the amount to buy (if under target) or sell (if over target) to restore your intended allocation.
Why should the buys and sells net to zero?
Because rebalancing only redistributes the value you already hold — what you sell from overweight assets funds the purchases of underweight ones. If you add new money instead, you can rebalance by buying underweight assets without selling.
How often should I rebalance?
Common strategies are calendar-based (e.g. quarterly or annually) or threshold-based (rebalance when an asset drifts more than, say, 5% from its target). More frequent rebalancing increases trading costs and potential taxes.
Does rebalancing have tax consequences?
Often yes. Selling crypto that has gained value typically triggers a taxable capital gain. This tool does not model taxes or fees; factor them in before trading, and consider rebalancing with new contributions to reduce sales.
What if my target percentages do not add to 100%?
The tool warns you. Targets should sum to 100% for the allocation to make sense; otherwise the implied dollar targets will not match your actual portfolio total.
Is this investment advice?
No. It is an educational calculator that does the rebalancing arithmetic. Crypto is volatile; consult a qualified professional for personal advice. Nothing is uploaded.

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