Why the Standard Comparison Is Incomplete
Search for "sole proprietorship vs limited company Turkey" and you will find the same comparison repeated across dozens of guides: a şahıs şirketi is taxed on a progressive personal income scale, a sermaye şirketi (Ltd. Şti. or A.Ş.) pays a flat corporate rate, and therefore the "cheaper" option depends on how much you expect to earn. That framing is not wrong. It is just half the story, and it is the half that matters least to a foreign founder.
The part almost universally left out is what happens when profit actually leaves the company. A sermaye şirketi's flat corporate rate only describes what happens to income while it stays inside the company. The moment that income is distributed to its owner as a dividend — which, for a foreign founder who did not incorporate purely to reinvest indefinitely, is usually the entire point — a second tax charge applies on top of the first. Most comparison articles quote the corporate rate as if it were the end of the calculation. It is the midpoint.
This is not another explainer of what a Ltd. Şti. or A.Ş. is structurally — SetupTurkiye already covers that in full in our Limited Liability Company guide and Joint Stock Company guide. This article is about the tax decision itself: what each structure actually costs once profit is distributed, and why the formation-stage choice is more consequential — and harder to undo — than the "which is cheaper to register" framing suggests.
Two Paths: Şahıs Şirketi and Sermaye Şirketi
Turkish law splits business structures into two broad families, and the tax treatment differs by family, not by the specific entity type within it.
Şahıs Şirketi (Sole Proprietorship)
A şahıs şirketi has no separate legal personality from its owner. There is no minimum capital requirement, registration is fast, and ongoing bookkeeping obligations are lighter than for a capital company. The owner is personally and unlimitedly liable for the business's debts, and all business profit is taxed as the owner's personal income under the Income Tax Law (Gelir Vergisi Kanunu, Law No. 193) — there is no separate "company level" of taxation to speak of.
Sermaye Şirketi (Ltd. Şti. or A.Ş.)
A Ltd. Şti. or A.Ş. is a separate legal person from its shareholders under the Turkish Commercial Code (TTK No. 6102). Shareholder liability is limited to capital contributed. Minimum capital is TRY 50,000 for a Ltd. Şti. and TRY 250,000 for an A.Ş. (TRY 500,000 under the registered-capital system). Company profit is taxed at the entity level under the Corporate Tax Law (Kurumlar Vergisi Kanunu, Law No. 5520) — and only when that after-tax profit is distributed to shareholders as a dividend does a second, personal-level charge apply.
For a deeper structural comparison of the two capital-company forms, see our guides on the Ltd. Şti. and the A.Ş. For the rest of this article, "sermaye şirketi" refers to both — the two-layer tax treatment described below applies identically to each.
How Each Structure Is Actually Taxed
Here is where the standard comparison usually stops — at the first row of this table.
| Layer | Şahıs Şirketi | Sermaye Şirketi |
|---|---|---|
| Tax on business income | Progressive personal income tax: 15% – 40% across five brackets (GİB, 2026 tariff) | Flat corporate tax: 25% on net profit (Law No. 5520) |
| Tax on distributing profit to the owner | None — there is no separate distribution event; the income is already the owner's | Dividend withholding tax: 15% standard rate on the after-tax profit distributed, reduced to 5–10% under many of Turkey's 85+ double taxation treaties |
| Formation cost and speed | No minimum capital; typically registered within 1–2 days | TRY 50,000 (Ltd. Şti.) or TRY 250,000 (A.Ş.) minimum capital; registration typically takes several days longer |
| Liability exposure | Unlimited — the owner's personal assets are on the line | Limited to capital contributed |
Looked at only one row at a time, the sermaye şirketi looks like the clear winner on tax the moment profit clears roughly the mid-to-upper personal income brackets. That is true, as far as it goes. But a founder who incorporates a Ltd. Şti. specifically to send profit home — which describes most foreign founders using SetupTurkiye's services — is never stopping at the first row.
The Real Math: What Happens When You Take Profit Out
Combine the two layers that apply to a sermaye şirketi when profit is actually distributed, and the comparison changes shape.
The combined figure is not simply 25% + 15% = 40%, because the withholding tax applies to what is left after corporate tax, not to the original profit. On TRY 100 of pre-tax profit: TRY 25 goes to corporate tax, leaving TRY 75; a 15% withholding on that TRY 75 is a further TRY 11.25; total tax taken is roughly TRY 36.25, against a starting TRY 100. That is the number a founder actually needs — not the 25% headline rate that every generic comparison stops at.
Set that combined ~36% against the progressive şahıs şirketi rate, and the picture is far closer than "flat 25% beats progressive up to 40%" suggests. A şahıs şirketi owner sitting in the 27% or 35% bracket is not obviously worse off than a sermaye şirketi owner who fully distributes profit every year — they may be paying a very similar effective rate, once the withholding layer is accounted for. The sermaye şirketi's tax advantage is real, but it belongs mainly to founders who reinvest profit rather than distribute it: retained earnings are taxed once, at 25%, and never touched by the withholding layer until the day they are actually paid out.
The 15% dividend withholding rate is Turkey's domestic default. Where Turkey has a double taxation treaty with the shareholder's country of residence, the treaty rate — often 5% or 10% — applies instead, and can shift the combined effective rate meaningfully in the sermaye şirketi's favour. This is jurisdiction-specific and should be checked against your actual country of tax residence, not assumed from a general guide.
Why This Choice Is Harder to Reverse Than It Looks
Every comparison so far treats the şahıs-versus-sermaye decision as a single, one-time fork: pick the structure that suits your expected profit level, and move on. In practice, the decision is closer to a lock-in than a simple fork, for a reason most guides never mention: converting from one structure to the other later is not a paperwork formality. It is its own transaction.
- Şahıs to Ltd. Şti./A.Ş.: This is not a "conversion" in the sense of relabelling an existing entity. A new capital company is incorporated, and the sole proprietorship's assets, contracts, employees, and customer relationships must be transferred into it — a process that can itself trigger tax consequences on the transferred assets and requires the underlying commercial contracts to be reassigned or renegotiated with the new legal entity as counterparty.
- Ltd. Şti./A.Ş. back to şahıs: This direction requires formally liquidating the capital company (see the Turkish Commercial Code's tasfiye provisions) before the individual can resume trading as a sole proprietor — a multi-step process with its own filing requirements and timeline, not an on/off switch.
Neither direction is prohibitively difficult, but neither is free, fast, or purely administrative either. A founder who incorporates the "wrong" structure for their actual growth trajectory does not simply pay a slightly suboptimal tax rate for a year or two before correcting course — they inherit a genuine restructuring project, with its own legal and accounting cost, on top of whatever tax was over- or under-paid in the meantime.
This is the practical reason the formation-stage decision deserves more attention than "which is cheaper to register" gives it. The right structure is not just the one that fits today's profit level — it is the one that fits the trajectory you actually expect over the next several years, because switching later costs more than getting it right the first time.
A Practical Framework for Choosing
Four questions determine which structure actually fits a given founder's situation — not just this year's numbers, but the shape of the business over time.
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Do you plan to distribute profit annually, or reinvest it?
If most profit will be paid out to you each year, the sermaye şirketi's flat 25% corporate rate is not the number to compare against personal brackets — the combined post-withholding rate is. If profit will largely stay in the company to fund growth, the sermaye şirketi's advantage is closer to the full 25% figure, since retained earnings avoid the withholding layer entirely until eventually distributed.
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What is your actual liability exposure?
A şahıs şirketi's unlimited personal liability is not a tax question, but for many foreign founders it is the deciding factor regardless of the tax math — particularly in sectors with meaningful contractual or third-party liability exposure.
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Do you need institutional credibility with banks, tenders, or larger counterparties?
Public tenders, larger commercial contracts, and many banking relationships in Turkey expect a registered capital company. A şahıs şirketi can be a perfectly rational choice for a small, owner-operated service business — but it can also close doors that a Ltd. Şti. or A.Ş. keeps open.
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What does your home country's tax treaty with Turkey say about dividends?
Because the withholding rate on distributed profit can range from 5% to 15% depending on your country of tax residence, the combined effective rate on a sermaye şirketi varies meaningfully by nationality. This should be checked specifically, not assumed.
SetupTurkiye works with foreign founders to choose the right entity type before incorporation — factoring in your actual distribution plans, home-country tax treaty position, and growth trajectory, not just this year's headline tax rate. Get in touch →
Summary
- The "25% flat vs. progressive personal tax" comparison most guides give is accurate but incomplete — it only describes tax on profit while it stays inside the company.
- Distributing profit from a sermaye şirketi triggers a further dividend withholding tax (15% standard, often 5–10% under tax treaties), bringing the combined effective rate on fully distributed profit to roughly 36% at the standard rate.
- The sermaye şirketi's tax advantage is strongest for founders who reinvest profit rather than distribute it annually — the opposite of how the comparison is usually framed.
- Switching structures later is a genuine restructuring event, not a formality — asset transfers, contract reassignment, and (in reverse) formal liquidation are all involved.
- Your actual distribution plans, liability exposure, need for institutional credibility, and home-country tax treaty position — not just this year's profit level — should drive the formation-stage choice.