In short: If you run a sole proprietorship (JDG, jednoosobowa działalność gospodarcza), you can settle your PIT (personal income tax) in three ways: the skala podatkowa (progressive tax scale: 12% and 32%, with a tax-free amount — kwota wolna — of PLN 30,000), the podatek liniowy (flat tax: a fixed 19%), or ryczałt (od przychodów ewidencjonowanych — lump-sum tax on recorded revenue, rates of 2%–17% depending on your industry, but with no deduction of costs). The choice is often decided not by the tax rate itself but by the składka zdrowotna (health insurance contribution) — because it's calculated completely differently under each form. Rule of thumb: high costs → skala or liniowy, low costs and services → ryczałt. You change your tax form once a year, by a declaration filed by the 20th day of the month following the month of your first revenue.
Choosing a tax form is one of the most important financial decisions an entrepreneur makes — and one of the few you commit to for an entire year. The very same business can pay tens of thousands of złoty more or less simply because it picked a different form. Below, we break down all three options in detail, with concrete figures.
Table of Contents
- Three forms for a JDG — quick comparison
- Skala podatkowa (general rules) — 12% and 32%
- Podatek liniowy — a fixed 19%
- Ryczałt on recorded revenue — 2%–17%
- Health insurance contribution (składka zdrowotna) — often the deciding factor
- Who benefits from which form
- Numerical example — the same business, three forms
- When and how to change your tax form
- How the AI assistant helps you estimate
- FAQ
1. Three forms for a JDG — quick comparison
| Feature | Skala podatkowa | Podatek liniowy | Ryczałt |
|---|---|---|---|
| Tax rate | 12% up to PLN 120,000, 32% above | 19% (flat) | 2%–17% by industry |
| Tax-free amount (kwota wolna) | PLN 30,000 | none | none |
| Deductible business costs | yes | yes | no (tax on revenue) |
| Joint filing with spouse | yes | no | no |
| Reliefs (child, joint filing, etc.) | full catalog | limited | limited |
| Health insurance contribution | 9% of income (min. PLN 432.54) | 4.9% of income (min. PLN 432.54) | flat: PLN 498.35 / 830.58 / 1,495.04 |
| Health contribution deduction | no | yes, up to PLN 14,100/year | yes, 50% of contributions paid |
| Typical for | low income, high costs, families | high income + real costs | services with low costs |
2. Skala podatkowa (general rules) — 12% and 32%
The skala podatkowa is the default form — if you don't choose anything else, this is how you're taxed. You pay tax on income (revenue minus costs), at two rates:
- 12% on income up to PLN 120,000 a year (reduced by the tax-reducing amount — kwota zmniejszająca podatek — of PLN 3,600),
- 32% on the surplus above PLN 120,000.
Its biggest advantage is the tax-free amount — kwota wolna — of PLN 30,000. Income up to that level is effectively untaxed. The skala also offers the most "soft" benefits:
- joint filing with your spouse (very advantageous when one spouse earns little or nothing),
- the full catalog of reliefs — for children, rehabilitation, thermal modernization, internet, and others,
- filing as a single parent.
Watch out for the 32% threshold and for the so-called danina solidarnościowa (solidarity levy) — an additional 4% on income above PLN 1,000,000 a year (calculated independently of the 32% rate).
The downside of the skala is the 9% health insurance contribution on income, which — unlike under the podatek liniowy and ryczałt — you cannot deduct (more on this in section 5).
3. Podatek liniowy — a fixed 19%
The podatek liniowy is a single 19% rate regardless of the size of your income. As with the skala, you pay on income and deduct costs, but you give up the skala's privileges:
- no tax-free amount — tax is calculated from the first złoty of income,
- no joint filing with your spouse,
- a limited catalog of reliefs.
The podatek liniowy starts to pay off once your income grows large enough that a substantial part of it would fall into the 32% bracket. Instead of paying 32% on the surplus, you pay a flat 19% on the whole amount.
Its advantage is a more favorable health insurance contribution — 4.9% of income (instead of 9% under the skala), and on top of that, you can deduct the health insurance contribution you paid — from income or as a cost — up to an annual limit of PLN 14,100.
4. Ryczałt on recorded revenue — 2%–17%
The ryczałt (od przychodów ewidencjonowanych — lump-sum tax on recorded revenue) works on completely different logic: you pay tax on revenue, not income — meaning you do not deduct costs. In exchange, the rates are low and depend on the type of business activity. In 2026, several rates apply: 2%, 3%, 5.5%, 8.5%, 10%, 12%, 12.5%, 14%, 15%, and 17%.
Sample rates by industry
- 17% — regulated professions (some professional services),
- 15% — selected intangible services: advertising, consulting, financial, brokerage,
- 14% — healthcare services, architectural and engineering services, technical research and analysis,
- 12% — most software-related services (programmers),
- 8.5% — a broad range of service activities (including some IT services, e.g., support and testing),
- 5.5% — manufacturing and construction work,
- 3% — trade and catering (excluding alcohol above 1.5%),
- 2% — selected revenue from non-industrially processed agricultural products.
You can use the ryczałt if your revenue in the previous year did not exceed the equivalent of EUR 2,000,000 (some industries are excluded from the ryczałt). Assigning the right rate to a specific activity can be ambiguous — a programmer, for example, might be taxed at 12% or 8.5% depending on the nature of the services — so if in doubt, it's worth confirming the classification with an accountant or requesting an official interpretation.
The ryczałt also has its own health insurance contribution model (three flat amounts — see below) and lets you deduct 50% of the health insurance contributions paid from your revenue.
5. Health insurance contribution (składka zdrowotna) — often the deciding factor
This is where the decision really hinges. The difference in the PIT rate alone is one thing, but the składka zdrowotna can flip the entire calculation — because it's computed differently for each form:
- Skala podatkowa: 9% of income, at least PLN 432.54/month (calculated on 100% of the minimum wage). You cannot deduct the contribution — it's a real, "hidden" tax that grows with income.
- Podatek liniowy: 4.9% of income, also at least PLN 432.54/month, but you can deduct the contribution paid (limit PLN 14,100/year).
- Ryczałt: three fixed amounts depending on annual revenue:
- PLN 498.35/month — revenue up to PLN 60,000,
- PLN 830.58/month — revenue PLN 60,000–300,000,
- PLN 1,495.04/month — revenue above PLN 300,000.
Practical takeaway: at high income, the skala "hurts" twice over — a high PIT rate and a high, non-deductible 9% contribution. Under the ryczałt, the contribution is known in advance and "locked in" by threshold — which can be a big advantage at high revenue with low costs. We break down contributions in detail in the article ZUS Contributions 2026 for Entrepreneurs.
6. Who benefits from which form
There's no single right answer — what matters is the structure of your business: the ratio of revenue to costs, and your family situation.
- Skala podatkowa — when you have low/medium income, high costs, file jointly with your spouse, or use reliefs (e.g., for children). The PLN 30,000 tax-free amount and the 12% rate make it the cheapest option at more modest income levels.
- Podatek liniowy — when you have high income together with real costs (deductible as under the skala), and joint filing or the child relief don't matter to you. A flat 19% plus a lower 4.9% contribution win out when you'd otherwise fall into the 32% bracket.
- Ryczałt — when you run services with low costs (IT, marketing, consulting, some regulated professions) and fall into a low industry rate. Having no costs to deduct doesn't hurt when you barely have any anyway — a low rate on revenue plus a contribution known in advance add up to the lowest total bill.
Directional rule: the more real costs you have, the more you should lean toward the skala or the liniowy; the fewer costs and the lower your industry rate, the more you should lean toward the ryczałt.
7. Numerical example — the same business, three forms
Assumptions: a programmer running a JDG, revenue of PLN 200,000/year, costs of PLN 20,000 (income of PLN 180,000), the applicable ryczałt rate is 12%. We ignore ZUS social insurance contributions (identical under every form) and calculate only PIT + the health insurance contribution. Figures are approximate and simplified.
| Form | PIT (year) | Health insurance contribution (year) | Total |
|---|---|---|---|
| Skala | ≈ PLN 30,000* | ≈ PLN 16,200 (9% × 180,000) | ≈ PLN 46,200 |
| Liniowy | ≈ PLN 32,500 (19% after deducting the contribution) | ≈ PLN 8,820 (4.9% × 180,000) | ≈ PLN 41,300 |
| Ryczałt 12% | ≈ PLN 23,400 (12% after deducting 50% of the contribution) | ≈ PLN 9,970 (PLN 830.58 × 12) | ≈ PLN 33,400 |
* Skala: PLN 120,000 × 12% + PLN 60,000 × 32% − PLN 3,600 = PLN 30,000.
In this scenario — high revenue, low costs, a low industry rate — the ryczałt is cheapest (about PLN 13,000 less per year than the skala). But if the same business had high costs instead (say, e-commerce with PLN 140,000 in cost of goods, leaving income of only PLN 40,000), the picture reverses: under the ryczałt you'd still pay a percentage of the full PLN 200,000 in revenue, while under the skala, income of PLN 40,000 fits almost entirely within the tax-free amount and the 12% rate — and the skala wins. This is exactly why there's no single answer.
8. When and how to change your tax form
You choose or change your tax form once a year. The key deadline: the declaration choosing (or giving up) a given form must be filed by the 20th day of the month following the month in which you earned your first revenue of the tax year.
In practice:
- first revenue in January 2026 → decision by 20 February 2026,
- first revenue in June → by 20 July,
- exception: first revenue only in December → the deadline shortens to 31 December of that year.
The simplest way to report the change is by updating your entry in CEIDG (Central Registration and Information on Business, form CEIDG-1) online, or by filing a declaration with the relevant tax office (on paper or via e-Urząd Skarbowy, the e-Tax Office). Keep in mind that your choice applies to the whole year — you can't change your form "retroactively" partway through. That's why it's best to think the decision through based on a forecast of your revenue and costs for the full year. We cover how to actually calculate advance payments after choosing your form in the article PIT Advance Payments for a JDG — Deadlines and Calculation.
9. How the AI assistant helps you estimate
Comparing the three forms means tedious calculation: PIT, the health insurance contribution, costs, reliefs — on top of thresholds that change every year. eKsięgowy AI is an AI assistant integrated with wFirma that walks you through this decision in conversation — in Polish, using your own data:
- answers questions about VAT, PIT, CIT, and ZUS and helps you understand the differences between the skala, liniowy, and ryczałt in your specific situation,
- reminds you of tax deadlines (including the cut-off date for changing your tax form), including via Telegram notifications,
- checks the VAT white list and auto-fills counterparty data from a NIP using the GUS registry,
- issues e-invoices to KSeF — without switching between systems.
Instead of guessing, you can simply ask "which option is more cost-effective for my revenue and costs" and get a concrete calculation to double-check with your accountant.
Frequently Asked Questions (FAQ)
Which tax form is most advantageous in 2026? It depends on the ratio of your revenue to costs and on your family situation. In general: high costs → skala or liniowy; low costs and services → ryczałt; low income or joint filing → skala.
Can I deduct business costs under the ryczałt? No. The ryczałt is a tax on revenue — you don't deduct costs. You can only deduct 50% of the health insurance contributions paid from your revenue.
How much is the health insurance contribution under the ryczałt in 2026? PLN 498.35, 830.58, or 1,495.04 a month — depending on your annual revenue bracket (up to PLN 60,000, PLN 60,000–300,000, above PLN 300,000).
What's the difference between the skala and the podatek liniowy? The skala has a tax-free amount of PLN 30,000, rates of 12%/32%, joint filing, and full reliefs, but a non-deductible 9% health insurance contribution. The podatek liniowy is a flat 19% with no tax-free amount and no joint filing, but a 4.9% contribution that you can deduct (up to PLN 14,100).
By when can I change my tax form for 2026? By the 20th day of the month following the month of your first revenue of the year. With first revenue in January 2026, that's by 20 February 2026.
Can I change my form during the year? Not with effect for the current year once the deadline passes — your choice binds you for the whole tax year. You can only report another change for the following year, by the equivalent deadline.
Does my choice of PIT form affect VAT? No — VAT is independent of your PIT tax form. A taxpayer on the ryczałt, the podatek liniowy, or the skala can equally be an active VAT payer or VAT-exempt.
Amounts, thresholds, and rates are indicative and change every year — before choosing a tax form, verify the current regulations or consult an accountant. Legal status: July 2026.