How to reduce corporate income tax for an s.r.o. comes down to three decisions: claim every expense you are legally entitled to, use the deductions the law already offers, and watch the taxable-revenue threshold that determines your rate. S.r.o. profit tax 2026 has three rates plus a minimum tax the company pays even in a loss year. The gap between a prepared and an unprepared year is usually several thousand euros. All of it depends on ongoing bookkeeping rather than hunting for documents in March.

What is the s.r.o. profit tax in 2026?

S.r.o. profit tax 2026 is progressive and the rate depends on taxable income (revenue) for the tax period. Under Section 15 of Act No. 595/2003 Coll. on Income Tax, three bands apply:

The rate is not applied in slices. If a company exceeds the €100,000 threshold by even one euro, the entire tax base is taxed at 21%. That is why revenue is worth monitoring throughout the year rather than at filing time — tax advisory is most useful before the year closes.

The second layer is the minimum tax under Section 46b of the Income Tax Act, known as the tax licence. It is due even in a loss year and in 2026 it has five bands — a new top band was added:

Any positive difference between the minimum tax paid and the tax calculated from the actual base can be credited against tax in the three immediately following tax periods. The minimum tax is not paid by, for example, a taxpayer filing for the first time for the period of its formation, a sheltered workshop, or a company in liquidation or bankruptcy (Section 46b(7)).

Where in the tax base does the room to reduce tax actually arise?

The tax base is not the same as accounting profit. It starts from the profit or loss determined under double-entry bookkeeping and is then adjusted under Section 17 of the Income Tax Act by items that increase or decrease it. Reducing tax therefore happens in two places at once: in what you post during the year, and in how you adjust it in the return.

In practice, most of the saving comes from decisions made between January and December. Optimisation during tax return preparation in March only adds up what the company already managed to do.

The same applies to the €100,000 threshold. The only way to avoid crossing it is to monitor it during the year: through the timing of supplies and, with them, invoicing, through valuation allowances and provisions, and by booking discretionary costs in the right year. All of it can be done in October. None of it can be done in March.

How can an s.r.o. reduce corporate income tax legally?

Legal tax reduction rests on claiming genuine expenses and statutory deductions, not on hiding revenue. These are the tools available to an ordinary Slovak s.r.o.

Tax expenses, depreciation and provisions

Under Section 2(i) of the Income Tax Act, a tax expense is one demonstrably incurred to earn, secure and maintain income, properly posted and recorded. What matters is the purpose and the supporting document. Three items companies most often leave unused:

• Asset depreciation under Sections 22 to 29. If an asset is not brought into use, no depreciation arises for that year at all.
• Statutory provisions under Section 20, for example for unused holiday entitlement including contributions.
• Valuation allowances on receivables under Section 20, where a receivable is overdue and meets the statutory time bands.

Watch Section 17(19): certain costs — typically consulting, legal, marketing studies and brokerage commissions — are tax expenses only once paid. An invoice posted in December and settled in February will not reduce the 2026 tax.

Deducting tax losses

Under Section 30, a tax loss can be deducted over a maximum of five immediately consecutive tax periods, up to 50% of the tax base. A micro-taxpayer has an advantage: it may deduct up to 100% of the tax base. A loss from the start-up phase is therefore a genuinely usable tool, provided the company records it properly and does not miss the five-year window.

R&D super-deduction and the investment deduction

The super-deduction under Section 30c allows a further 100% of eligible research and development costs to be deducted from the tax base — the same costs a second time. It requires an R&D project with the statutory particulars. Eligibility does not depend on the industry, but on whether you can allocate individual costs to a specific project.

An even more widespread myth is “we have a subsidy, so we are not entitled to the super-deduction”. Under Section 30c(5), you cannot claim the super-deduction on costs for which full or partial support from public funds was provided — two reliefs on the same costs cannot be combined. It is not true, however, that a subsidy switches off the whole project. What matters is how you have set up the release of the subsidy against R&D depreciation: if they match, the rest of the project remains usable.

When a client comes to us with a finished file, three things are usually missing:

• The link between cost and project. An invoice from a contractor is not enough on its own; it must be allocable to the project. We have even handled a case where a contractor invoiced materials precisely so that his invoices could be allocated to the project.
• Separating subsidy-funded costs from those that are not.
• The right timing. The project must exist before the costs arise, not the other way round.

The deduction for investment costs under Section 30e was extended from 1 January 2026: the investment plan period grew from six to nine years and the final period for claiming moved to 2030. For companies with a phased manufacturing investment, that means more time.

What changed for company cars in 2026?

From 1 January 2026, the transitional provision in Section 85n of the VAT Act, inserted by Act No. 261/2025 Coll., applies to M1 passenger cars and L1e and L3e motorcycles. For vehicles acquired between 1 January 2026 and 30 June 2028 as capital assets, or leased on anything other than a short-term basis, a company deducts a flat 50% of VAT (Section 85n(1) and (2)). The same flat rate applies to fuel, spare parts and servicing — including for cars the company bought before 2026. Under the flat rate, no detailed trip log is required. Taxi services, demonstration vehicles and driving schools are exempt from the flat rate (Section 85n(4)).

A full 100% deduction remains available for a vehicle used exclusively for business, subject to three conditions:

1. Notify the exclusive business use to the tax authority within the deadline for filing the VAT return for the period in which you claim the deduction (Section 85n(9)).
2. Keep a detailed electronic trip log (Section 85n(6)).
3. Make it available on request to the tax office by electronic means.

For income tax, the non-deducted half of the VAT is not a tax expense and does not enter the vehicle’s tax acquisition price either. Your choice of regime therefore also affects the tax base.

A trip log genuinely pays off when the company really does drive 100% for business, has several vehicles or higher fuel and servicing costs, and above all when it already keeps some records — then the 100% deduction is only a matter of formalising them. For a company that already kept trip logs in Excel and had cars with no private use, we recommended staying with the full deduction. It does not pay off for a single older car with low mileage and no records: the administration outweighs the VAT saved. Switching from 50% to 100% during the year is also a real question — we dealt with it for a 2019 vehicle the client wanted to switch from April 2026. The deducted tax is then adjusted under Section 85n(10) in conjunction with Section 54d of the VAT Act.

Salary or dividend? What works better for a shareholder

The decision on distributing profit affects the total burden more than most small optimisations. A managing director’s salary is a tax expense for the company and reduces the tax base, but it carries social and health contributions. A dividend does not reduce the tax base, but no contributions apply.

The withholding rate follows the period in which the profit was generated, not the payment date. Profit for 2024 paid out today is subject to 10%; profit for 2025 and later to 7%. The company withholds and remits the tax by the 15th day of the following month and files a notification on form OZN4311v26 within the same deadline, a form effective from 2026.

The point at which one option overtakes the other has to be calculated, not quoted — which is exactly why you will not find it in any table. In consultations we do not use a “from – to” table; we model the specific person. The model always includes:

• actual annual profit before tax and the expected volume for the next two years,
• whether the managing director also has an employment contract — if so, health insurance is already covered and the whole calculation shifts,
• the contributions they already pay to the Social Insurance Agency and the health insurer, including any top-up from the annual settlement,
• when comparing with a sole trader: 60% flat-rate expenses and the new contribution bands — from 1 July 2026 a self-employed person with 2025 income between €2,876.91 and €9,144 pays a micro-contribution of €131.34 a month, and above €9,144 the minimum social insurance contribution is €303.11 a month,
• both income tax and dividend tax, always both. The result is the net monthly amount.

The threshold cannot be fixed to a single number. It moves depending on whether the managing director has other income, and contribution caps and rates change faster than the articles that quote them.

Which mistakes push the tax bill up unnecessarily?

The most common mistake in our practice is not a forgotten expense but a missed notification or deadline. These cannot be corrected retroactively, and the penalty does not depend on how profitable the company is. Three cases recur every year:

1. Licence fees to a shareholder without notification. At year end a shareholder is paid licence fees under a licence agreement — €100,000 in one case — and no tax is withheld. If the company agrees with the author not to withhold tax, it must notify the tax authority by 31 January of the following year (Section 43(14) of the Income Tax Act). Whoever finds out in March faces a penalty — €100 in our cases — plus an open question as to whether the expense is tax-deductible at all.
2. An unpaid balance of tax. The client pays the tax only in part or with the wrong payment reference, nobody checks the personal taxpayer account on the Financial Administration portal, and a few months later the debt is with the enforcement department — €2,860.58 in one case. In practice, only a subject rated highly reliable under the tax reliability index (Section 53d of the Tax Procedure Code) then realistically gets an instalment plan.
3. Unfiled returns. A client who filed nothing for 2022 to 2025 and only came in 2026, after receiving a notice: four returns filed retroactively plus a supplementary return.

On top of that come advance payments that were never set up, so the tax balance and the first advance arrive at once, and technical errors that bookkeeping can catch:

• Crossing the €100,000 threshold by a few euros at the end of December. Moving invoicing into January is legitimate only where it matches the actual supply.
• Unpaid costs under Section 17(19) that the company nonetheless included in the tax base.
• An unused loss whose five-year window has expired.
• A super-deduction without project documentation, which will not survive an audit.

Where does the market get tax optimisation wrong?

In our practice, the market gets three things wrong: it treats optimisation as a March event, chases statutory provisions while overlooking the dull things, and sees digitalisation as an administrative burden.

It treats optimisation as a March event. When we sit down to the tax return, 90% of the result has already been decided. It was decided during the year, as the company invoiced, bought, hired and distributed profit. Optimisation is not filling in a form; it is a sequence of decisions made in time.

It chases statutory provisions and overlooks the dull things. The super-deduction, cars and dividends are attractive topics. Yet clients’ money actually disappeared on a missed €100 notification, on an unpaid tax balance that ended up with the enforcement department, and on a tax reliability index nobody looked at until they needed an instalment plan. The biggest real saving is usually the penalty that never arose.

It sees digitalisation as an administrative burden. It is the opposite. Without ongoing data there is nothing to optimise — you can only optimise what you know in October, not what you find out in March. That is exactly why we keep our accounts fully digitally, and why we see e-invoicing not as a problem but as the moment ongoing data becomes the standard for everyone.

Summary

S.r.o. profit tax 2026 ranges from 10% to 24%, with a minimum tax of €340 to €11,520 on top. The question of how to reduce corporate income tax for an s.r.o. is therefore not worth opening in March — by then most decisions have been made. The room appears throughout the year: in bringing assets into use, in the timing of payments, in documenting the R&D project, in choosing the company car regime, and in the choice between salary and dividend. Companies lose just as much money on missed notifications and unpaid tax balances, which a single look at the calendar and the personal taxpayer account would prevent.

FAQ: frequently asked questions

Does an s.r.o. pay tax even when it makes a loss?

Yes. Under Section 46b of the Income Tax Act, a company pays the minimum tax regardless of whether it made a profit or a loss. In 2026 it ranges from €340 for taxable income up to €50,000 to €11,520 for income above €5,000,000. Exemptions are set out in Section 46b(7), for example for the first tax period after the company was formed.

When does the 10% tax rate apply?

The 10% rate applies where the company’s taxable income (revenue) for the tax period does not exceed €100,000. The test is applied to total taxable revenue, not to profit. Once the threshold is crossed, the entire tax base is taxed at 21%.

Does the 50% VAT deduction on a car mean I must tax an employee on 1% of its price?

Not automatically. The flat 50% deduction under Section 85n of the VAT Act is a VAT regime and did not change the income tax treatment of private use of a car. An employee’s benefit in kind of 1% of the input price under Section 5(3)(a) of the Income Tax Act depends on whether the employee actually uses the car privately as well.

Can a tax loss from previous years be deducted all at once?

Not in full, unless the company is a micro-taxpayer. Under Section 30, a loss is deducted over a maximum of five immediately consecutive tax periods, and in each of them up to 50% of the tax base. A micro-taxpayer may deduct up to 100% of the tax base.

Reviewed by

Mgr. Pavol Lukáčik

This article was reviewed before publication by a licensed tax advisor and the owner of Lukáčik & Partners, which has provided tax, accounting and payroll advisory to SMEs, sole traders and individuals since 2011.

• Tax advisor, SKDP licence no. 981/2011, 19 years of practice
• Faculty of Law, Trnava University
• Know-how from an international advisory network
• Member of the Slovak Chamber of Tax Advisors

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