Rebalancing a portfolio sounds complicated. It isn't. Once a year, four steps, done.
Step 1: Add Up Your Total Portfolio
List every account and balance. Sum them. This is the only number that matters for the calculation.
Example: 401(k) $120,000 + Roth IRA $30,000 + taxable brokerage $50,000 = $200,000 total.
Step 2: Compute Target Values
Multiply the total by each target percentage. For 60/30/10 stocks/bonds/cash:
- Stocks: $120,000
- Bonds: $60,000
- Cash: $20,000
Step 3: Compare Actuals to Targets
Look at what you actually have in each asset class right now. The difference is your trade.
Example: actual stocks $135,000 means you're $15,000 overweight — sell $15,000 of stocks. Or, better, direct new contributions to bonds until you're back on target.
Our Portfolio Rebalancing Calculator does the entire calculation in one pass with as many asset classes as you want.
Step 4: Execute, Minimizing Taxes
If possible, rebalance inside tax-advantaged accounts (IRA, 401(k)) where buy/sell triggers no tax. In taxable accounts, prefer to route new contributions and dividends to underweight assets — that gets you closer to target without selling.
How Often
Once a year is plenty for most investors. Quarterly is fine if you enjoy it. More often than that, you start chewing into returns with transaction costs and taxes.
What to Avoid
- Tweaking based on market predictions. You're rebalancing to a fixed target, not trying to time anything.
- Selling in a taxable account when an IRA could do the same job tax-free.
- Skipping years because "the market is too volatile right now" — that is exactly when rebalancing earns its keep.
Bottom Line
Set a date on your calendar. Spend 30 minutes. Bring drift back to target. Then walk away for another year.
Run the numbers yourself
Plug your own inputs into our free calculators — no signup.