pl-income-tax

Section 1 -- Quick reference

Quick reference table

Field	Value
Country	Poland (Rzeczpospolita Polska)
Tax type	Personal income tax (podatek dochodowy od osob fizycznych -- PIT)
Primary legislation	PIT Act (26 July 1991); Ryczałt Act (20 November 1998)
Supporting legislation	Social Insurance Act; Health Insurance Act; Tax Ordinance (Ordynacja podatkowa)
Tax authority	Krajowa Administracja Skarbowa (KAS -- National Revenue Administration)
Filing portal	e-Urzad Skarbowy (e-US) / podatki.gov.pl
Currency	PLN only
Skala podatkowa	12% up to PLN 120,000; 32% above; kwota wolna PLN 30,000
Podatek liniowy (flat tax)	19% flat; no kwota wolna; no joint filing
Ryczałt rates	2%--17% depending on activity (PKD code)
IP Box	5% on qualifying IP income
Filing deadline	30 April of the following year (all PIT forms)
Monthly advance payments	20th of the following month
Contributor	Open Accountants Community
Validated by	Pending -- requires Polish doradca podatkowy or biegły rewident sign-off
Validation date	Pending

Taxation form summary

Form	Return	Kwota wolna	Joint filing	Expense deductions
Skala podatkowa	PIT-36	Yes (PLN 30,000)	Yes	Yes
Podatek liniowy	PIT-36L	No	No	Yes
Ryczałt	PIT-28	No	No	No (revenue-based)
IP Box	PIT-36/36L + PIT/IP	Per base form	Per base form	Yes (nexus ratio)

Conservative defaults

Ambiguity	Default
Unknown taxation form	STOP -- must determine before computing
Unknown expense category	Not deductible
Unknown business-use proportion (car, phone)	0% business use (20% if car not in asset register)
Unknown PKD code for ryczałt	STOP -- rate depends on PKD
Unknown VAT status	Assume non-deductible VAT adds to cost

Red flag thresholds

Threshold	Value
HIGH single-transaction size	PLN 20,000
HIGH tax-delta on a single conservative default	PLN 2,000
MEDIUM conservative-default count	>4 across the return
LOW absolute net tax position	PLN 50,000

Read this whole section before classifying anything.

Section 2 -- Required inputs and refusal catalogue

Required inputs

• Minimum viable input — bank statement for the tax year in CSV, PDF, or pasted text. Must cover full year. Acceptable from any Polish bank: PKO BP, mBank, ING Bank Śląski, Santander Polska, Bank Pekao, Alior Bank, or fintech (Revolut, Wise).
• Recommended inputs — sales invoices (faktury), purchase invoices, chosen taxation form confirmation, PKD code(s), ZUS contribution statements (ZUS DRA).
• Ideal inputs — complete KPiR (tax ledger) or ewidencja przychodów (for ryczałt), środki trwałe register (asset register), prior year PIT return.
• Refusal policy if minimum is missing — SOFT WARN. No bank statement = hard stop. Bank statement only = proceed with warnings.

Refusal catalogue

• R-PL-1 -- Spółka z o.o. (sp. z o.o.) or spółka akcyjna — Trigger: client operates through a limited company. Message: "This skill covers JDG (sole proprietorship) only. Sp. z o.o. files CIT-8 under corporate income tax at 9%/19%. Please use a separate skill."
• R-PL-2 -- International income / CFC rules — Trigger: client has controlled foreign company or significant foreign income. Message: "International income and CFC rules are outside scope. Consult a doradca podatkowy."
• R-PL-3 -- Transfer pricing — Trigger: related-party transactions. Message: "Transfer pricing is outside scope."
• R-PL-4 -- Taxation form unknown — Trigger: client has not confirmed skala/liniowy/ryczałt. Message: "I cannot compute tax without knowing your chosen taxation form. Please confirm: skala podatkowa, podatek liniowy, or ryczałt."

Section 3 -- Transaction pattern library (the lookup table)

3.1 Polish banks (fees and interest)

Polish banks (fees and interest)

Pattern	Treatment	Notes
PKO BP, PKO BANK POLSKI	Bank charges: deductible expense (KPiR)	Monthly service fees
MBANK, MBANK S.A.	Bank charges: deductible expense	Same
ING BANK ŚLĄSKI, ING PL	Bank charges: deductible expense	Same
SANTANDER POLSKA, BZWBK	Bank charges: deductible expense	Same
BANK PEKAO, PEKAO S.A.	Bank charges: deductible expense	Same
ALIOR BANK	Bank charges: deductible expense	Same
REVOLUT, WISE, N26 (fee lines)	Deductible expense	Check for subscription invoices
ODSETKI, INTEREST (credit)	Revenue if business loan interest received; else EXCLUDE	Personal interest = capital income
ODSETKI, INTEREST (debit)	Deductible if business loan interest	Personal: EXCLUDE
KREDYT, POŻYCZKA (principal)	EXCLUDE	Loan principal movement

3.2 Polish government and statutory bodies

Polish government and statutory bodies

Pattern	Treatment	Notes
URZĄD SKARBOWY, US	EXCLUDE	Tax payment -- not deductible
ZUS, ZAKŁAD UBEZPIECZEŃ SPOŁECZNYCH	Social ZUS: deductible from income (or as cost); Health ZUS: depends on form	See Section 5.2
CEIDG	EXCLUDE	Registration -- government act
GUS	EXCLUDE	Statistical office fees
KRS	Deductible if business registration	Court register fee

3.3 Polish utilities and telecoms

Polish utilities and telecoms

Pattern	Treatment	Notes
PGE, TAURON, ENEA, ENERGA	Deductible if business premises	Home: apportion business %
PGNiG, INNOGY	Deductible if business premises (gas)	Apportion if home
ORANGE, PLAY, T-MOBILE, PLUS	Deductible: business phone/internet	Mixed-use: apportion
UPC, VECTRA, NETIA	Deductible: business internet	Mixed-use: apportion
MPWIK, WODOCIĄGI	Deductible if business premises (water)	Apportion if home

3.4 Insurance

Insurance

Pattern	Treatment	Notes
PZU, ERGO HESTIA, WARTA, ALLIANZ, AXA	Deductible if business insurance	Personal insurance: NOT deductible from income
UBEZPIECZENIE OC/AC (vehicle)	Deductible: business portion of vehicle insurance	If car not in asset register: 20% of costs

3.5 SaaS and software -- international

SaaS and software -- international

Pattern	Billing entity	Treatment	Notes
GOOGLE (Ads, Workspace, Cloud)	Google Ireland Ltd (IE)	Deductible expense	Reverse charge VAT applies
MICROSOFT (365, Azure)	Microsoft Ireland Operations Ltd (IE)	Deductible expense	Same
ADOBE	Adobe Ireland (IE)	Deductible expense	Same
META, FACEBOOK ADS	Meta Platforms Ireland Ltd (IE)	Deductible expense (marketing)	Same
GITHUB, OPENAI, ANTHROPIC	US entities	Deductible expense	Non-EU
SLACK, ATLASSIAN, ZOOM	Various IE/NL/US	Deductible expense	Check billing entity
SPOTIFY	Spotify AB (SE)	Deductible expense if business use	EU entity

3.6 Professional services (Poland)

Professional services (Poland)

Pattern	Treatment	Notes
BIURO RACHUNKOWE, KSIĘGOWA, ACCOUNTING	Deductible expense	Bookkeeping fees
KANCELARIA, ADWOKAT, RADCA PRAWNY	Deductible expense	Legal fees if business
NOTARIUSZ	Deductible expense	If business transaction
DORADCA PODATKOWY	Deductible expense	Tax advisory

3.7 ZUS contributions (special treatment)

ZUS contributions (special treatment)

Pattern	Treatment	Notes
ZUS SPOŁECZNE (emerytalna, rentowa, chorobowa, wypadkowa)	Deductible from income or as KPiR cost	Both methods allowed
ZUS ZDROWOTNE (health) -- skala podatkowa	NOT deductible	Non-deductible under skala
ZUS ZDROWOTNE (health) -- podatek liniowy	Deductible from income up to annual limit	Check current limit
ZUS ZDROWOTNE (health) -- ryczałt	50% deductible from revenue	Half deductible
FUNDUSZ PRACY	Deductible	Labour fund contribution

3.8 Transport and travel

Transport and travel

Pattern	Treatment	Notes
PKP, PKP INTERCITY	Deductible if business travel (delegacja)	Document purpose
LOT, RYANAIR, WIZZAIR	Deductible if business travel	Document purpose and destination
UBER, BOLT, FREENOW	Deductible if business purpose	Document occasion
ORLEN, BP, SHELL, CIRCLE K (fuel)	Deductible: if car in asset register, 100% business or 75% mixed; if private car, 20%	Requires documentation
PARKING, APCOA, SKYCASH	Deductible if business purpose	Document occasion

3.9 Office and supplies

Office and supplies

Pattern	Treatment	Notes
MEDIA EXPERT, RTV EURO AGD, KOMPUTRONIK	Capital if > PLN 10,000; else deductible	Check środki trwałe threshold
IKEA, LEROY MERLIN	Capital or expense depending on amount	Office furniture/equipment
CASTORAMA, OBI	Deductible if business premises repairs	Document purpose
ALLEGRO, AMAZON.PL	Deductible if business purchase	Verify nature of purchase

3.10 Food and entertainment

Food and entertainment

Pattern	Treatment	Notes
BIEDRONKA, LIDL, ŻABKA, KAUFLAND, AUCHAN	Default: NOT deductible (personal provisioning)	Deductible only if hospitality/catering business
RESTAURANT, RESTAURACJA	Deductible if documented business purpose (representation)	Unlike Sweden, PL allows business meal deduction with documentation

3.11 Rent and property

Rent and property

Pattern	Treatment	Notes
CZYNSZ, WYNAJEM (monthly rent)	Deductible if business premises	Home office: proportional to business area
WSPÓLNOTA MIESZKANIOWA	NOT deductible unless home office proportion	Housing cooperative fees

3.12 Internal transfers and exclusions

Internal transfers and exclusions

Pattern	Treatment	Notes
PRZELEW WŁASNY, OWN TRANSFER	EXCLUDE	Internal movement
WPŁATA WŁASNA	EXCLUDE	Owner capital injection
WYPŁATA, DRAWINGS	EXCLUDE	Owner drawings
DYWIDENDA	EXCLUDE	Dividend (capital income)
LOKATA, SAVINGS	EXCLUDE	Savings transfer

Section 4 -- Worked examples

Example 1 -- Skala podatkowa, standard computation

Input: JDG, skala podatkowa, revenue PLN 300,000, costs PLN 100,000, social ZUS PLN 18,000. Computation: Dochód = PLN 200,000. Less social ZUS = PLN 182,000. Tax: 12% on PLN 120,000 = PLN 14,400; 32% on PLN 62,000 = PLN 19,840. Total = PLN 34,240. Less kwota zmniejszająca PLN 3,600. Tax = PLN 30,640.

Example 2 -- Private car used for business (20% rule)

Input line: 2025-04-15 ; ORLEN WARSZAWA ; DEBIT ; Fuel ; -350.00 PLN

Reasoning: Car is NOT in the business asset register (środki trwałe). Per Art. 23 PIT Act, only 20% of total car expenses are deductible. Deductible amount = PLN 70.00.

Example 3 -- Capital asset above PLN 10,000

Input line: 2025-07-01 ; KOMPUTRONIK ; DEBIT ; Laptop ThinkPad ; -12,500.00 PLN

Reasoning: Above PLN 10,000. Must enter środki trwałe register. Computer hardware: 30% straight-line depreciation. Year 1 (6 months): PLN 12,500 x 30% x 6/12 = PLN 1,875 depreciation.

Example 4 -- Ryczałt IT services

Input: Revenue PLN 400,000, social ZUS PLN 18,000, health ZUS 50% deductible = PLN 6,000. Computation: Base = PLN 400,000 - PLN 18,000 - PLN 6,000 = PLN 376,000. Tax at 12% = PLN 45,120. No expense deductions under ryczałt.

Section 5 -- Tier 1 rules (deterministic)

5.1 Skala podatkowa rates

• Skala podatkowa rate structure — 12% on first PLN 120,000. 32% above. Kwota zmniejszająca podatek = PLN 3,600 (= PLN 30,000 x 12%). Monthly tax-reducing amount = PLN 300. (PIT Act art. 27)

5.2 ZUS contribution deductibility

• ZUS contribution deductibility — Social contributions (społeczne): fully deductible from income (all forms). Health contribution (zdrowotna): NOT deductible under skala; deductible up to limit under liniowy; 50% deductible under ryczałt. (PIT Act, Health Insurance Act)

5.3 Podatek liniowy

• Podatek liniowy rate — 19% flat on net income. No kwota wolna. No joint filing. No child credit. Health contribution deductible up to annual limit. (PIT Act art. 30c)

5.4 Ryczałt rates

Ryczałt rates by activity (Ryczałt Act)

Rate	Activity
17%	liberal professions
15%	consulting
12%	IT services
8.5%	general services
5.5%	construction
3%	trade

• Ryczałt basis and limit — Tax on gross revenue, not profit. No expense deductions. Rate depends on PKD code. Revenue limit: PLN 8,569,200. (Ryczałt Act)

5.5 Capital asset threshold

• Capital asset threshold — Assets above PLN 10,000: must enter środki trwałe register and depreciate. Below PLN 10,000: may expense immediately. Car depreciation cap: PLN 150,000 (combustion) / PLN 225,000 (electric). (PIT Act art. 22a--22o)

5.6 Depreciation rates

Depreciation rates by asset class (PIT Act art. 22a--22o)

Asset	Rate
Computer hardware	30%
Software	50%
Passenger cars	20%
Office furniture	20%
Buildings	2.5%

• Depreciation start timing — Depreciation starts month after asset placed in service. (PIT Act art. 22a--22o)

5.7 Private car expenses

• Private car expenses rule — Car NOT in asset register: only 20% deductible. Car IN register: 100% if exclusively business; 75% if mixed use. (PIT Act art. 23)

5.8 VAT interaction

• VAT interaction rules — VAT collected: NOT income. Input VAT recovered: NOT expense. Non-deductible VAT (e.g., 50% on passenger cars): IS expense. VAT-exempt (under PLN 200,000): gross = net. (VAT Act)

5.9 Record keeping

• Record keeping requirements — KPiR required for skala/liniowy. Ewidencja przychodów for ryczałt. Retention: 5 years from end of year return was filed. JPK reporting for digital books. (PIT Act, Tax Ordinance)

5.10 Czynny żal (voluntary disclosure)

• Czynny żal voluntary disclosure — Filing voluntary correction before audit initiation provides immunity from fiscal penalties. Critical safety valve. (Kodeks karny skarbowy)

Section 6 -- Tier 2 catalogue (reviewer judgement required)

6.1 Ryczałt rate classification

• Ryczałt rate classification ambiguity — Why ambiguous: Rate depends on specific PKD code and nature of services. Many IT activities could be 12% or 15%. Default: STOP -- do not guess rate. Question: "What is your PKD code? What specific services do you provide?"

6.2 IP Box eligibility

• IP Box eligibility ambiguity — Why ambiguous: Requires R&D documentation, separate IP income ledger, nexus ratio. Incorrect application carries significant penalty risk. Default: Do not apply without reviewer confirmation. Question: "Do you have R&D cost documentation and a separate IP income ledger?"

6.3 Mixed-use vehicle

• Mixed-use vehicle ambiguity — Why insufficient: Business vs private use proportion unknown. Default: 20% of expenses (car not in register). Question: "Is your car in the business asset register (środki trwałe)? If so, is it exclusively or mixed business use?"

6.4 Home office proportion

• Home office proportion ambiguity — Why insufficient: Business area unknown. Default: 0% deduction. Question: "Do you have a dedicated room for business? What proportion of total floor area?"

6.5 ZUS optimization (ulga na start / preferencyjne)

• ZUS optimization ambiguity — Why ambiguous: ZUS basis depends on business duration and elections. Default: Use amounts actually paid per ZUS DRA. Question: "Are you in the ulga na start period, preferencyjne ZUS, or standard ZUS?"

6.6 Switching between lump-sum and real expenses

• Switching methods ambiguity — Why complex: Transition adjustment required for receivables and payables. Default: Flag for reviewer. Question: "Did you switch expense methods this year? If so, provide year-end receivables/payables from prior year."

Section 7 -- Excel working paper template

Sheet "Transactions"

Sheet Transactions columns

Column	Content
A	Date
B	Counterparty
C	Description
D	Amount (PLN)
E	Category (Revenue / KPiR Cost / Depreciation / ZUS Social / ZUS Health / EXCLUDE)
F	Deductible amount
G	Default? (Y/N)
H	Question for client
I	Notes

Sheet "Tax Computation"

Branches by taxation form: skala podatkowa, liniowy, or ryczałt. Each with step-by-step formulas per Section 5.

Section 8 -- Bank statement reading guide

CSV format conventions. PKO BP exports use semicolons with DD.MM.YYYY dates. mBank exports use CSV with comma delimiters. ING PL uses semicolons. Common columns: Data (Date), Opis (Description), Kwota (Amount), Saldo (Balance).

Polish language variants. Common: przelew (transfer), wpłata (deposit), wypłata (withdrawal), prowizja (commission/fee), odsetki (interest), faktura (invoice), opłata (charge), czynsz (rent).

ZUS payments. Monthly payments to ZUS appear as "ZUS" or "ZAKŁAD UBEZPIECZEŃ SPOŁECZNYCH". Separate social from health contributions using payment details or ZUS DRA statements.

• Tax payments to Urząd Skarbowy — Payments to Urząd Skarbowy for PIT advances: EXCLUDE (not deductible).

Foreign currency. Convert to PLN at NBP average rate for the business day before the transaction.

Section 9 -- Onboarding fallback (only when inference fails)

9.1 Business form

• Business form inference/fallback — Inference: JDG identifiable from CEIDG registration or account type. Fallback: "Are you a JDG (sole proprietorship) or operating through a spółka?"

9.2 Taxation form

• Taxation form inference/fallback — Inference: Not inferable from bank statement. Always ask. Fallback: "Which taxation form have you chosen: skala podatkowa, podatek liniowy, or ryczałt?"

9.3 PKD code

• PKD code inference/fallback — Inference: Inferable from counterparty mix and invoice descriptions. Fallback: "What is your PKD code? (Required for ryczałt rate determination.)"

9.4 ZUS basis

• ZUS basis inference/fallback — Inference: ZUS payment amounts may indicate ulga na start vs standard. Fallback: "Are you in ulga na start, preferencyjne, or standard ZUS?"

9.5 VAT status

• VAT status inference/fallback — Inference: VAT payments in bank statement. Fallback: "Are you a czynny podatnik VAT (active VAT payer)?"

9.6 Prior year losses

• Prior year losses inference/fallback — Inference: Not inferable. Fallback: "Do you have losses carried forward from prior years?"

Section 10 -- Reference material

Test suite

PLN 300,000 revenue, PLN 100,000 costs, PLN 18,000 social ZUS. Tax = PLN 30,640.

PLN 500,000 dochód, PLN 18,000 social ZUS, PLN 12,000 health deductible. Tax = PLN 89,300.

PLN 400,000 revenue, PLN 18,000 social ZUS, PLN 6,000 health (50%). Tax = PLN 45,120.

Client on PIT-36L claims PLN 30,000 tax-free. REJECT -- kwota wolna does not apply to liniowy.

Car PLN 200,000. Deductible depreciation = PLN 150,000 x 20% = PLN 30,000. Excess non-deductible.

Edge case registry

INCORRECT.

Flag for reviewer -- PKD code determines rate.

INCORRECT -- ryczałt taxes revenue.

INCORRECT.

Revert to base form.

Cap at 20% if not in asset register.

NOT available.

TOO LATE.

Abolished since July 2022.

PLN 150,000 combustion / PLN 225,000 electric.

Prohibitions

• NEVER apply kwota wolna to podatek liniowy or ryczałt
• NEVER deduct business expenses under ryczałt
• NEVER deduct health contribution under skala podatkowa
• NEVER allow joint filing for podatek liniowy
• NEVER apply ulga dla klasy średniej (abolished 2022)
• NEVER apply IP Box without R&D documentation
• NEVER allow 100% car expenses for private cars not in asset register
• NEVER exceed car depreciation caps
• NEVER present calculations as definitive
• NEVER advise on international income, CFC rules, or transfer pricing

Sources

1. Ustawa o podatku dochodowym od osob fizycznych (PIT Act, 26 July 1991)
2. Ustawa o zryczaltowanym podatku dochodowym (Ryczałt Act, 20 November 1998)
3. Ustawa o systemie ubezpieczeń społecznych (Social Insurance Act)
4. Ordynacja podatkowa (Tax Ordinance)
5. podatki.gov.pl

Disclaimer

This skill and its outputs are provided for informational and computational purposes only and do not constitute tax, legal, or financial advice. Open Accountants and its contributors accept no liability for any errors, omissions, or outcomes arising from the use of this skill. All outputs must be reviewed and signed off by a qualified professional (such as a doradca podatkowy, biegły rewident, or equivalent licensed practitioner in Poland) before filing or acting upon.

The most up-to-date, verified version of this skill is maintained at openaccountants.com.