Czech Time Test and Futures: Does the 3-Year Rule Apply?

General information about tax rules, not tax or legal advice. Rules change and every situation is different: check with a qualified adviser in your country before you file.

Every Czech investor learns the same reassuring fact early on. Hold your shares for three years and the gain is exempt. It is a genuinely generous rule, it shapes how people here think about investing, and it produces a very specific mistake among traders: the assumption that if you are patient enough, the Finanční správa eventually leaves you alone.

Then you start trading CME futures. You are flat every night. You hold nothing for three years, you hold nothing for three days, and you begin to wonder whether the time test has anything at all to say about your situation. It does not, and it is worth understanding why, because the reason also explains a second rule that costs Czech futures traders more money than the tax itself: what happens to a losing year.

None of this is obscure. It is written in the income tax act. The problem is that Czech tax guidance is built around shares, funds and property, and a derivatives trader reading it has to work out by elimination which paragraph applies to them, and then discover that the friendly rules they read about were written for someone else.

This article does that work. What the time test exempts and what it does not, where a futures contract sits in the law, why the hundred thousand koruna exemption is no help, the loss rule that catches everyone in year one, when your trading stops being other income and becomes a business, and what all of it means for someone whose session starts at half past three in the afternoon.

What the time test actually exempts

The Czech time test exempts gains on certain assets once you have held them long enough. For securities the period is three years. For a share or interest in a company that is not a security, it is five years. Other assets have their own periods: property has its own, longer regime, and movable things such as vehicles have a shorter one.

Two recent developments matter if you also hold ordinary investments alongside your trading. A cap was introduced limiting the amount of exempt income from these sales in a year, set at forty million koruna, and a subsequent reform removed that cap again for sales of securities and company interests that satisfy the time test, while the limit was retained for crypto assets. Legislation in this area has been unusually busy, so verify the current position for the year you are filing rather than trusting any summary, including this one.

What has never changed is the logic. The exemption rewards holding a thing. It attaches to an asset that you owned, for a measurable period, and then disposed of. That framing is the reason it does nothing for a futures trader, and the reason is not the length of the holding period.

Where a futures contract sits in the law

A futures contract is a derivative. It is an agreement about a future price, cash settled, opened and closed on an exchange. It is not a security in the sense the time test uses, so the exemption written for securities does not reach it. Even a Czech trader who somehow held a single contract for three years, rolling it quarter after quarter, would not be holding the same instrument at the end that they held at the start.

For an individual who is not carrying on a business, income from derivatives is reported in the other income section of the return rather than in either the employment or the capital assets sections. That placement is what governs everything else: what you can deduct, what happens to a loss, and whether contributions are due.

Two things follow that you should be clear about before you place your first trade:

• No holding period helps you. There is no long term rate, no exemption to wait for, and no advantage to holding a position over a year end.
• The classification is worth confirming for your own case. The boundary between other income and business activity is a real one in Czech law, and it depends on how systematic and organised your trading is, not on how you describe it.

The hundred thousand koruna exemption

The second rule Czech investors quote at each other is the small sales exemption: gross proceeds from the sale of securities below one hundred thousand koruna in a taxable period are exempt.

Note the word securities again. The exemption is written for the same category the time test is written for, and a derivatives trader is outside it for the same reason. Note also that it is measured on gross proceeds, not on profit. On a futures account, a single E-mini contract has a notional value many multiples of a hundred thousand koruna, so even if the exemption did apply, one trade would blow through it before lunch.

It is worth being blunt about this, because a lot of Czech traders start out believing they are below every threshold that exists and therefore have nothing to declare. If you are trading index futures with any regularity, you are not below anything. Build your record keeping on that assumption from the first month.

The rule that makes a losing year worth nothing

Here is the part that hurts, and the reason this article exists.

In the other income section of the Czech return, income and expenses are matched within each individual type of income. Where the expenses connected to a type of income exceed the income from it, the difference is disregarded. It is not a deductible loss, it does not reduce your other income, and there is no mechanism to carry it forward to a future year.

Read that in trading terms. A first year in which you lose money learning to trade futures produces, for tax purposes, nothing at all. No relief now, no credit later. Then a profitable second year is taxed in full, as if the first year had not happened.

This is one of the sharpest differences between the Czech treatment and the treatment in most neighbouring countries, where a loss is at least parked and carried forward against future gains of the same kind. Three practical consequences:

• Netting within the year matters enormously. Gains and losses inside the same type of income in the same taxable period are set against each other. A single bad December can therefore be absorbed by a good March, but only if they are in the same calendar year.
• Your learning phase should be small. Not because losses are shameful, but because a koruna lost while learning has no tax value whatsoever. Trade the smallest contract available while you are working out whether your method survives contact with a live market.
• The business classification changes this. If the activity is carried on as a business, the loss rules are different, and a loss can behave very differently. That is one of the main reasons the classification question below is not academic.

Confirm the current wording with a Czech tax adviser rather than acting on this paragraph alone. The principle has been stable for a long time, but the amounts and the surrounding rules are not.

Fifteen, twenty three, and where the line falls

Czech personal income tax has two rates. The lower is fifteen per cent. The higher is twenty three per cent, and it applies to income above a threshold defined as thirty six times the average wage, which currently works out at roughly 1.76 million koruna a year. The exact figure is republished every year because the average wage moves, so look it up for the year you are filing.

Two things to be aware of. The threshold looks at your total taxable income, not at your trading alone, so a salary plus a good trading year can push the last slice of your profits into the higher band even if neither would do it separately. And only the excess above the line is taxed at the higher rate, so crossing it is a step, not a cliff, and it is never a reason to stop trading in November.

Other income or a business: the question that decides your contributions

This is the question that has the largest financial consequence in the whole article, and it is the one most Czech traders avoid asking.

Income in the other income section does not attract social security or health insurance contributions. Income from independent business activity does. That difference is worth far more than a few percentage points of income tax, and it is not something you get to choose by preference. The tax authority looks at whether the activity is carried on systematically, independently, in your own name and with the intention of making a profit.

An honest reading for a futures trader:

• Occasional trading of your own capital with a modest number of transactions looks like other income and is normally reported that way.
• Trading every session, as your main occupation, with a defined process and business tools starts to look a great deal like an independent activity, and the authority is entitled to see it that way.

There are advantages on the business side too. Business losses have a different and more useful treatment, expenses can be claimed on a broader basis, and the flat rate regimes available to self employed people in Czechia can simplify life considerably at certain income levels. There are also obligations: registration, contributions, advance payments and a different filing profile.

This is exactly the conversation to have with a daňový poradce before the amounts get large, not after. It is an hour of someone's time and it determines your position for years.

Deadlines, MOJE daně and the koruna conversion

The Czech return for the previous calendar year is due three months after the end of the tax period, which means the beginning of April. Filing electronically extends that to four months, the beginning of May. If a tax adviser or auditor files on your behalf, the deadline moves to six months, the beginning of July, provided the arrangement is in place in time.

The filing threshold is the other thing to check. There is a level of total taxable income below which no return is required, and a separate, lower level of side income that obliges an employee with a normal salary to file. Both are stated in the act and both have been changed in recent years, so confirm the current figures on the Finanční správa site before deciding that you are not obliged to file.

Then there is currency. Your account settles in dollars, your return is in koruna, and the conversion is part of the taxable amount rather than a detail. Czech rules provide for using either the official rates or, in certain cases, a uniform annual rate published for the tax period. Which route you use should be a decision you make once, apply consistently, and be able to document.

The file you should be able to hand over without preparation contains: the annual broker statement, the twelve monthly ones, every deposit and withdrawal with dates, the exchange rate basis, a separate list of commissions and exchange fees, and invoices with payment records for market data, platform licences and any trading system you bought, including each instalment if you paid in instalments.

Chicago hours on a Czech clock

Czechia sits seven hours ahead of Chicago for most of the year, which puts the American session in the second half of your afternoon.

CME Globex runs the equity index week from Sunday at 17:00 Chicago time to Friday at 16:00, with a one hour halt every day starting at 16:00 Chicago time. Translated to Czech time, the week opens around midnight on Sunday night, the daily pause falls between 23:00 and midnight, and the week closes around 23:00 on Friday.

The hour that decides everything is the US cash open, which in Prague is 15:30, with the American equity cash close at 22:00. That is genuinely compatible with a job. You can work a normal day, be at the screen before the open, and be finished by early evening if you set a stop time and keep it.

One trap in the calendar, and it catches people every single year. The United States and the European Union do not change their clocks on the same dates. For roughly three weeks in March, and for a shorter window at the end of October, the gap is six hours instead of seven and the cash open lands at 14:30 Czech time. Put both switch dates in your calendar now, today, before you forget.

The practical summary is uncomfortable but clear. The Czech time test is a good rule that has nothing to do with you. The hundred thousand koruna exemption is a good rule that has nothing to do with you. And the treatment of a losing year in the other income section is worse for a beginner here than in most of the countries around you.

So plan accordingly. Trade the smallest contract while you are learning, because those losses are worth nothing on a return. Keep gains and losses inside the same calendar year where your method gives you any say in it. Get the other income versus business question answered by a daňový poradce before your volume makes the answer obvious to someone else first.

Then stop thinking about tax. Everything on this page applies to a number you still have to produce, on two contracts, in one window of the afternoon, over a couple of hundred sessions. Nothing here is tax advice, the rules in this area have moved repeatedly, and the current version lives on the Finanční správa site rather than in any article.

czech time test and futures

Educational content, not investment advice. Trading futures involves substantial risk of loss and is not suitable for every investor. Any reference to Algomyth results is hypothetical, simulated over historical data, and shown in full on the performance page; past performance does not guarantee future results.