Portfolio a alokace
How to Rebalance Without Unnecessary Taxes and Fees
Key takeaways
- Rebalancing through new contributions (contributing to the lagging component) creates no taxable event.
- Selling a position held less than 3 years is subject to the holding-period test; after 3 years, gains are tax-exempt in the Czech Republic (provided total proceeds from sales do not exceed CZK 100,000 per year).
- Only intervene when there's a significant deviation (5–10%) — excessive frequency raises costs.
- This text is not tax advice; always verify your situation with a professional.
Rebalancing restores target portfolio weights — but if you do it by selling profitable assets, it can trigger a tax liability. The right strategy minimises this.
Why Rebalance at All
Over time, asset weights drift away from your intentions. If equities grow faster than bonds, the equity share rises and the portfolio carries more risk than you planned. Rebalancing brings weights back into line and also automatically "buys low and sells high."
Two Rebalancing Strategies
There are two basic approaches:
- Rebalancing through new contributions: redirect your regular contribution to the component that has fallen below its target weight. You sell nothing, no taxable event is triggered. Works especially well in the active portfolio-building phase with monthly contributions.
- Rebalancing by selling and buying: sell part of the overweight component and reinvest the proceeds into the lagging one. Precise, but potentially tax-relevant.
Tax Perspective in the Czech Republic
The sale of securities in the Czech Republic is subject to 15% personal income tax — unless you qualify for an exemption. Two key exemptions (always verify the current rules with a tax adviser):
- Holding period test: proceeds from selling securities held for more than 3 years are tax-exempt.
- Value test: total sale proceeds of up to CZK 100,000 in a tax year are tax-exempt.
Rebalancing through new contributions therefore creates no taxable event, whereas selling does — and selling a position held less than 3 years means you pay tax on the entire realised gain.
How to Set Triggers
Rebalance based on a rule, not a feeling. Two popular methods: a fixed date (once a year) or a weight threshold (a 5–10% deviation in any component). The second method responds more flexibly to large moves. Both are better than ad hoc decision-making. More on the daily strategy in regular monthly investing.
FAQ
How do I rebalance a portfolio without taxes?
The simplest way: redirect new contributions to the component that has fallen below its target weight. You sell nothing and no taxable event arises. This method works well in the active portfolio-building phase with regular contributions.
What is the holding period test for equities in the Czech Republic?
Proceeds from selling securities held for more than 3 years are tax-exempt in the Czech Republic. A shorter holding period is subject to 15% tax on realised gains. This text is not tax advice — verify your situation with a professional.
How often should I rebalance?
Once a year or when there is a 5–10% deviation from the target weight. Rebalancing too frequently increases fees and tax impact without a proportional benefit. Less is usually more.