CFDs, options and futures: the D-IFI form and the flat 25 % from 2026
Derivatives go on their own form, under different rules from shares. From assessment year 2026 a flat 25 % applies. How to tell a CFD from a share, how an option premium is taxed, and what happens on assignment.
Short answer
If you traded CFDs, options, futures or certificates, you do not file Doh-KDVP but D-IFI. From assessment year 2026 a flat rate of 25 % applies regardless of holding period (the ZDDOIFI-B amendment, Official Gazette of the Republic of Slovenia, 6 November 2025) — previously it was 40 % in the first year. The deadline is the same as for other capital income: 1 March 2027 for 2026.
What counts as a derivative
D-IFI covers anything that derives its value from something else, rather than being ownership of it:
- CFDs (contracts for difference) — on shares, indices, commodities, currencies;
- options — calls and puts, bought or sold;
- futures and forward contracts;
- certificates, warrants and similar structured products.
Doh-KDVP, by contrast, covers ownership: shares, ETFs, investment coupons, business shares.
How to tell whether you hold a CFD
This is the most common source of error, because the broker’s interface often shows a company name while what you bought is a contract on it.
- eToro — if you use leverage, sell short or trade commodities, it is generally a CFD. Look for the instrument-type column in your statement.
- Vantage — predominantly a CFD platform; a “share” there is almost always a contract for difference.
- Interactive Brokers — options and futures are always derivatives; shares are real shares.
- Revolut — usually real shares, but be careful with commodities (gold, silver), which are often derivative.
- Trading 212 — two separate accounts: Invest holds real shares, CFD holds derivatives.
What changed in 2026
| Up to and including 2025 | From assessment year 2026 | |
|---|---|---|
| Under 1 year | 40 % | 25 % |
| 1–5 years | 25 % | 25 % |
| 5–10 years | 20 % | 25 % |
| 10–15 years | 15 % | 25 % |
| 15–20 years | 10 % | 25 % |
| Over 20 years | 0 % | 25 % |
The ZDDOIFI-B amendment (Official Gazette, 6 November 2025) abolished both the punitive 40 % short-term rate and every long-holding relief. For an active trader that is a reduction; for someone who held a derivative for ten years it is an increase.
D-IFI is not Doh-KDVP: four differences that matter
| Shares (Doh-KDVP) | Derivatives (D-IFI) | |
|---|---|---|
| Rate from 2026 | 25 % → 20 % → 15 % → 0 % by period | flat 25 % |
| Long-holding relief | yes, 0 % after 15 years | no |
| Wash-sale rule | applies, ±30-day window | does not apply |
| Loss offsetting | against gains from securities | within derivatives only |
That last row is why classification still matters now that the headline rate is the same. Two separate forms mean two separate pools of gains and losses. If you report CFDs as shares, losses offset where they must not — and the return is wrong, even if the total tax happens to come out similar.
Normalized costs are 1 % on purchase and 1 % on sale (ZDDOIFI, art. 11), with the same restriction as for shares: granted only when the difference is positive, and never turning it into a loss.
Options: how FURS treats the premium
This is the part almost every tool gets wrong, because it imports American logic.
In July 2026 we obtained a written answer from FURS on the taxation of covered calls and cash-secured puts. The rule is strict separation:
- The premium goes entirely on D-IFI. Selling an option opens a short derivative position. Both expiry and assignment or exercise count as disposal or closing of the position. The full premium, less normalized costs, is reported on D-IFI.
- The share trade is an independent taxable event — at the strike price. A covered call assigned → the share’s sale price is the strike, and the premium is not added. A put assigned → the share’s acquisition value is the strike, and the premium is not subtracted.
Example: a covered call on a long-held share
An investor holds 100 shares bought in 2005 for €2,000. In August 2026 they sell a covered call at a strike of €80 and receive €1,000 in premium. In September 2026 the option is assigned and the shares are sold at the strike, for €8,000.
Correct — two separate forms:
| Form | What is reported | Difference | Normalized costs | Base | Rate | Tax |
|---|---|---|---|---|---|---|
| D-IFI | premium €1,000 | €1,000.00 | €10.00 | €990.00 | 25 % | €247.50 |
| Doh-KDVP | sale at strike €8,000, cost €2,000 | €6,000.00 | €100.00 | €5,900.00 | 0 % (over 15 years) | €0.00 |
| Total | €247.50 |
Wrong — premium added to the share’s sale price: the sale would be €9,000, the whole €7,000 difference would fall in the over-15-years bracket at a zero rate, and the tax would be €0.00.
The difference is €247.50 of tax underpaid — and a return showing nothing on D-IFI, even though an option was sold and closed. That is precisely why FURS keeps the forms strictly apart: the share’s holding period must not be allowed to “inherit” the premium.
What Plutko does
Plutko separates real shares from derivatives in the same statement and produces two separate files — DOH_KDVP.xml and D_IFI.xml. For options it tracks the full lifecycle:
- opening and closing a position — buy, sell, closing trade;
- expiry — the position closes at zero value;
- assignment and exercise — the option leg closes under the same rule as expiry, while the share leg is booked at the strike, with no cost-basis adjustment;
- rate by assessment year — 25 % from 2026, the old schedule with 40 % for earlier years when you file for the past.
The methodology, with article references, is published on the Accuracy page.
Frequently asked questions
When do I need D-IFI rather than Doh-KDVP?
Whenever you traded a contract rather than ownership: a CFD, an option, a future, a certificate. If you bought a share or an ETF and sold it, you need Doh-KDVP. If you have both, you file both forms.
Does a loss on CFDs offset a gain on shares?
No. Securities and derivatives are separate tax categories with separate forms. Losses offset only within their own category, in the same year.
Does the wash-sale rule apply to CFDs?
No. The rule denying a loss on repurchase within 30 days applies to securities (Doh-KDVP), not to derivatives. On D-IFI the loss is recognised even if you reopen the position immediately.
How is the premium taxed if the option expires worthless?
Expiry counts as closing the position. If you sold the option and it expired worthless, you kept the entire premium — that is your gain on D-IFI, less normalized costs. If you bought the option and it expired worthless, the entire purchase price is your loss on D-IFI.
What if my option was assigned?
Two separate taxable events arise. The option leg closes and the premium goes on D-IFI; the share leg goes on Doh-KDVP at the strike price. In neither case is the premium added to or subtracted from the share’s value.
Why is my tax on derivatives higher when the rate is the same 25 % as on shares?
Because derivatives get no long-holding relief. A share held over 15 years is taxed at 0 %; a derivative stays at 25 % no matter how long you held it. On long-term positions that is the entire difference.
I only traded in 2025 — does the flat 25 % apply to me?
No. The new regime applies to assessment years from 2026 onwards. For 2025 the old schedule still applies, under which positions held less than a year were taxed at 40 %.
Do I have to file D-IFI even if I made a loss?
Yes. The obligation arises on disposal, not on profit, and a recognised loss reduces the base on your other derivative trades in the same year.
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