In plain words
Say you choose a mix of 70% stocks and 30% bonds. After a strong year for stocks, your portfolio might drift to 80% stocks and 20% bonds. You did nothing, yet your risk went up. If stocks then fall sharply, you lose more than you planned for.
Rebalancing means moving your portfolio back to its target mix. You either sell some of what has grown and buy what has lagged, or you direct new money to the part that is underweight.
It feels backwards, because you trim what is doing well and add to what is not. That is the point. It is a built-in way to sell high and buy low, and to keep your risk where you chose it.
How it helps real people
- It controls risk. Your portfolio stays as risky as you decided, not as risky as the market made it.
- It removes guesswork. A rule decides when to act, so you are not reacting to headlines.
- It can improve long-term results. Buying assets after they fall and trimming them after they rise can help over time, though it is mainly a risk tool, not a return booster.
- It prepares you for retirement. As you shift to a more conservative mix with age, rebalancing is how the shift happens.
How to rebalance
Pick a method
- Calendar: check once or twice a year, on a set date, and rebalance if anything is off.
- Threshold: rebalance whenever an asset class drifts more than a set amount from target, such as 5 percentage points.
- Combined: check on a calendar, act only if past a threshold. Many people find this the simplest balance.
Choose the least costly way
- Use new contributions first. Send new money to the underweight asset. No selling, no tax.
- Rebalance inside tax-advantaged accounts. Trades inside a 401(k) or IRA do not create a tax bill.
- Redirect dividends to the underweight asset instead of reinvesting them in place.
- Sell in taxable accounts last, and consider tax effects. Selling a winner held over a year is generally taxed at long-term capital gains rates. For 2026, the 0% long-term rate applies to taxable income up to $98,900 for married couples filing jointly and $49,450 for single filers; higher rates apply above that.
- Pair with tax-loss harvesting if you have losses to offset gains.
Look at all accounts together
Treat your 401(k), IRAs and taxable accounts as one portfolio. You can hold bonds in one account and stocks in another, as long as the total mix is on target.
A worked example
Illustrative. Ruth is fictional. Her target is 70% stocks and 30% bonds. She started the year with $100,000. After a strong year, her portfolio looks like this:
| Asset (illustrative) | Value | Current share | Target share | Target value |
|---|---|---|---|---|
| Stocks | $91,000 | 78% | 70% | $81,900 |
| Bonds | $26,000 | 22% | 30% | $35,100 |
| Total | $117,000 |
Her stocks are 8 points over target, beyond her 5-point threshold. Inside her IRA, she sells about $9,100 of stock funds and buys bonds. No tax is due because the trade is inside the IRA.
The next year stocks fall 20% and bonds rise 3%. Because she rebalanced, she lost about $16,400 on stocks instead of about $18,200 if she had stayed at 78%. She rebalances again, this time buying stocks at lower prices.
These figures are illustrative only and not a projection of any investment.
Who it’s for
- Anyone with a target mix of stocks and bonds.
- People with several accounts who need one view of their risk.
- Investors nearing retirement who are gradually lowering risk.
Who it’s not for
- People using a single all-in-one fund, such as a target-date or balanced fund, which rebalances internally.
- Very small portfolios where trading costs would outweigh any benefit, though most platforms now have low or no trading fees.
Risks and trade-offs
- Taxes in taxable accounts. Selling winners can trigger capital gains.
- Over-rebalancing. Trading too often adds cost and can cut into gains in a trending market.
- It can feel wrong. Selling winners and buying losers takes discipline.
- It does not prevent loss. It keeps risk at your chosen level; your chosen level can still lose money.
Common mistakes
- Never rebalancing. Drift can turn a moderate portfolio into an aggressive one.
- Rebalancing on emotion. Use a rule, not a feeling.
- Ignoring tax location. Rebalance in tax-advantaged accounts where possible.
- Looking at one account in isolation. Balance the whole portfolio.
- Forgetting employer stock. Large single-company holdings can throw off your mix and add risk.
FAQs
How often should I rebalance?
Once or twice a year, or when an asset drifts more than about 5 points from target, works for most people.
Do I pay tax when I rebalance?
Not inside a 401(k), IRA or other tax-advantaged account. In a taxable account, selling at a gain may be taxed.
Should I rebalance during a crash?
A rule-based rebalance in a crash means buying stocks at lower prices. It is uncomfortable, but it is what the strategy is designed to do.
Can I rebalance with new money only?
Often, yes. Directing new contributions to the underweight asset is the simplest, tax-free method for people still saving.
Does cash value need rebalancing?
Cash value in a whole life policy is not traded like a fund. But if you count it as part of your stable assets, include it when you look at your overall mix.
Related strategies
- Asset allocation: choosing your mix — set the target first.
- Capital gains and tax-loss harvesting — keep taxes low when you sell.
- Index funds and dollar-cost averaging — low-cost funds that are easy to rebalance.
Your next step
Ask VeraLife at /#ask to check how far your current mix has drifted from target.
Education, not advice. Examples are illustrative. VeraLife.ai is not a registered investment adviser, broker-dealer or insurance agency.