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Topic of the Month April 2028: Tax Year-End and Spring Portfolio Review

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Key takeaways

Why April Matters for an Investor

For many Czech investors, April is the month of the tax return. The 1 April deadline (extended to 1 July for tax advisors) forces a look at income records — and that is precisely the right time to conduct a full portfolio review as well. It need not involve major changes; the point is a disciplined annual look.

Tax Check: What to Review

Before finalising the tax return, work through these points:

Spring Portfolio Review

The tax return opens a natural window for reviewing allocation. After a year of market movements, an original 80/20 equity-bond split may have drifted to 85/15 or 75/25 — rebalancing returns the portfolio to its original intent. Key questions for the spring review:

The biggest mistake during a review is to search for the "best" ETF and switch between funds. Every switch is a taxable event. A review should confirm whether the strategy makes sense, not complicate it.

Rebalancing Without Unnecessary Tax

The most tax-efficient way to rebalance is to top up the underweighted component from new contributions — without selling. If you contribute monthly, direct contributions towards what has fallen. Selling the "overweighted" component for rebalancing is only necessary when the deviation exceeds your target tolerance (typically ±5%) and new contributions cannot correct it. For a more detailed approach to the Q2 review, see the dedicated article.

What Not to Confuse with a Review

A review is not a reaction to the market. If the market has fallen, a review is not a reason to sell. On the contrary: if the market has fallen and you have new cash, rebalancing can be an opportunity to buy the underweighted equity component. An ETF strategy works best when the review is mechanical, not emotional.

FAQ

When does the three-year holding period apply for ETFs?

If you hold an ETF for more than three years and total proceeds from securities sales in that year do not exceed CZK 100,000, the income is fully exempt from tax. Details are in the article on ETF taxation in Czechia.

How do I know if my portfolio needs rebalancing?

If the actual allocation deviates from the target by more than 5 percentage points. For example, a target of 80% equities with an actual 87% is a signal to rebalance at the next contribution or by year-end at the latest.

Can I deduct losses from last year?

Losses from securities sales can be applied in the same year or carried forward for up to five years. They must be of the same income type (capital). Consult a tax advisor.

Is it better to do the review in April or at year-end?

Ideally once a year at the same time. April is advantageous because it coincides with the tax return — you have a complete income overview. Year-end is better for forward tax planning.

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