Tax Blog
for Entrepreneurs
KSeF, VAT, JPK, Payroll, PIT — tips and instructions from experienced accountants. Tax changes, new regulations, practical guidance.
Bookkeeping & Flat Tax
Book of receipts and expenses, flat tax, taxation forms
Complete\ Guide\ to\ PKPiR\ 2026\ —\ Everything\ You\ Need\ to\ Know\ \|\ Accounting365
Complete\ guide\ to\ PKPiR\ 2026:\ definition,\ columns,\ revenue\ limits,\ cost\ deductions,\ errors,\ tools\.\ Everything\ you\ need\ to\ know\ about\ the\ Tax\ Register\ of\ Revenues\ and\ Expenses\.
Flat\-rate\ Tax\ 2026\ —\ Rates\ 2%\-17%,\ Limits,\ and\ Complete\ Table\ \|\ Accounting365
Complete\ table\ of\ flat\-rate\ tax\ rates\ 2026:\ 2%\-17%\ by\ profession\.\ Revenue\ limits\ \(2\ million\ EUR\),\ who\ qualifies,\ when\ to\ choose\ flat\-rate\.\ Detailed\ guide\ with\ examples\.
How\ to\ Keep\ KPiR\ Accounting\ Records\ —\ Step\ by\ Step\ Guide\ \|\ Accounting365
Complete\ practical\ guide\ to\ KPiR\ \(Cash\ Register\ and\ Income\ Book\)\.\ Learn\ how\ to\ maintain\ records\ step\-by\-step,\ avoid\ common\ errors,\ and\ prepare\ for\ tax\ audits\.
KPiR\ vs\ Flat\ Tax\ in\ 2026\ —\ Complete\ Comparison\ \|\ Accounting365
Complete\ comparison\ of\ KPiR\ \(receipts\ and\ expenses\ log\)\ vs\ flat\ tax\ in\ 2026\.\ Costs,\ revenue\ limits,\ VAT,\ switching\ procedures,\ and\ practical\ financial\ scenarios\ for\ Polish\ entre\.\.\.
KPiR\ Revenue\ Limit\ 2026\ —\ when\ is\ full\ accounting\ required\?\ \|\ Accounting365
KPiR\ revenue\ limit\ in\ 2026\ is\ 10,646,500\ PLN\ \(2\.5\ million\ EUR\)\.\ Learn\ when\ full\ accounting\ is\ mandatory,\ who\ can\ use\ KPiR,\ and\ what\ happens\ when\ you\ exceed\ the\ limit\.
How\ to\ record\ a\ correction\ invoice\ in\ KPiR\?
Recording\ corrective\ invoices\ in\ KPiR:\ increase\ method,\ decrease\ method,\ VAT\ rules\ and\ practical\ accounting\ examples\.
How\ to\ Fill\ KPiR\ Columns\ 1\-19\ —\ Complete\ Guide\ 2026\ \|\ Accounting365
Complete\ guide\ to\ filling\ KPiR\ \(Receipts\ and\ Expenses\ Log\)\ columns\ 1\-19\ in\ 2026\.\ Step\-by\-step\ instructions,\ practical\ examples,\ KSeF\ requirements,\ and\ common\ mistakes\ to\ avoid\.
Can\ a\ Programmer\ be\ on\ a\ Flat\ Tax\ Rate\ in\ 2026\?\ \|\ Accounting365
Can\ a\ programmer\ be\ on\ a\ 12%\ flat\ tax\ rate\ in\ 2026\?\ Tax\ brackets,\ revenue\ limits,\ KPiR\ comparison,\ and\ a\ practical\ guide\ for\ IT\ entrepreneurs\ in\ Poland\.
Flat\-rate\ Tax\ and\ VAT\ —\ Can\ a\ Flat\-rate\ Payer\ Be\ a\ VAT\ Payer\?\ \|\ Accounting365
Flat\-rate\ tax\ and\ VAT:\ can\ a\ flat\-rate\ payer\ be\ a\ VAT\ payer\?\ Learn\ the\ rules\ for\ combining\ flat\-rate\ tax\ with\ VAT,\ record\-keeping\ obligations,\ revenue\ limits,\ and\ practical\ tips\.\.\.
Flat\-rate\ Tax\ for\ Rental\ Income\ 2026\ —\ Rates\ 8\.5%\ and\ 12\.5%\ \|\ Accounting365
Flat\-rate\ tax\ for\ rental\ income\ in\ 2026:\ rates\ 8\.5%\ and\ 12\.5%,\ revenue\ limits\ 100k\ and\ 200k\ PLN,\ payment\ deadlines,\ spouse\ calculations\.\ Guide\ for\ property\ owners\.
What\ Expenses\ Are\ NOT\ Deductible\ in\ KPiR\?\ —\ Complete\ Guide\ \|\ Accounting365
Complete\ guide\ to\ non\-deductible\ expenses\ in\ KPiR\ \(Record\ of\ Income\ and\ Costs\)\.\ Personal\ expenses,\ entertainment,\ fines,\ penalties\.\ Tax\-deductible\ vs\.\ non\-deductible\.
Can\ you\ change\ tax\ form\ during\ the\ year\?\ \|\ Accounting365
Can\ you\ change\ tax\ form\ during\ year\?\ Rules\ for\ switching\ between\ flat\-rate\ tax,\ KPiR,\ linear\ tax\.\ When\ changes\ take\ effect\ and\ what\ documents\ are\ needed\.
VAT
VAT tax, registration, split payment, deductions, declarations
VAT\ in\ 2026\ —\ Complete\ Guide\ for\ Entrepreneurs\ \|\ Accounting365
Complete\ VAT\ guide\ 2026:\ rates,\ registration,\ calculations,\ deductions,\ JPK_VAT,\ split\ payment,\ international\ transactions,\ and\ common\ mistakes\.\ From\ an\ expert\ with\ 18\ years\ of\ \.\.\.
VAT\ Margin\ Scheme\ —\ What\ It\ Is\ and\ How\ to\ Settle\ It\ Correctly\ \|\ Accounting365
VAT\ margin\ scheme:\ rules,\ when\ to\ use\ it,\ calculation\ examples,\ documentation\ requirements,\ and\ JPK_VAT\ settlement\.\ Complete\ guide\ from\ a\ tax\ advisor\.
VAT\ Registration\ in\ Poland\ \|\ Accounting365
Complete\ guide\ to\ VAT\ registration\ in\ Poland:\ 200,000\ PLN\ threshold,\ mandatory\ vs\ voluntary\ registration,\ VAT\-R\ form,\ benefits\ and\ deregistration\.
JPK_VAT\ in\ 2026\ —\ New\ Requirements\ and\ Filing\ Deadlines
JPK_VAT\ in\ 2026\ —\ complete\ guide\ to\ new\ requirements\ and\ filing\ deadlines\.\ JPK_V7M\ structure,\ GTU\ codes,\ KSeF\ integration,\ penalties,\ and\ digital\ tools\.
VAT\ Exemption\ Up\ to\ 240,000\ PLN\ 2026\ —\ Complete\ Guide\ \|\ Accounting365
VAT\ exemption\ raised\ to\ 240,000\ PLN\ in\ 2026\.\ Who\ qualifies,\ how\ to\ calculate\ revenue,\ transition\ rules,\ common\ pitfalls,\ practical\ tax\ planning\ advice\.
Split\ Payment\ —\ When\ is\ it\ Mandatory\ and\ How\ Does\ it\ Work\?\ \|\ Accounting365
Split\ payment\ mechanism\ in\ 2026:\ when\ mandatory,\ which\ goods\ are\ covered,\ limits,\ penalties,\ how\ to\ fill\ invoices\ and\ avoid\ fines\.\ Complete\ guide\.
Reverse\ Charge\ VAT\ 2026\ —\ Rules,\ When\ to\ Use,\ and\ Settlement\ \|\ Accounting365
Reverse\ charge\ VAT:\ when\ it\ applies,\ how\ to\ calculate\ it,\ documentation\ requirements,\ JPK_VAT\ reporting,\ and\ common\ mistakes\ in\ 2026\.
VAT\ on\ Company\ Cars\ 2026\ —\ Rules,\ Deductions,\ and\ Tax\ Treatment\ \|\ Accounting365
VAT\ on\ company\ cars\ 2026:\ rules\ for\ VAT\ deduction,\ split\ use,\ company\ car\ benefits,\ fuel\ costs,\ maintenance,\ and\ insurance\.\ Complete\ guide\ from\ a\ tax\ specialist\.
Is\ invoice\ without\ VAT\ correct\?\ When\ can\ you\ issue\?
Is\ invoice\ without\ VAT\ correct\?\ When\ can\ you\ issue\ VAT\-exempt\ invoice,\ what\ elements\ should\ it\ contain\.\ Guide\ for\ entrepreneurs\.
WDT\ and\ WNT\ VAT\ 2026\ —\ EU\ Transactions\ Explained\ \|\ Accounting365
WDT\ \(export\ within\ EU\)\ and\ WNT\ \(import\ within\ EU\):\ VAT\ treatment,\ documentation,\ VIES\ registration,\ and\ JPK_VAT\ reporting\ for\ intra\-EU\ transactions\.
VAT\ Declaration\ Correction\ —\ When\ and\ How\ to\ File\?
VAT\ declaration\ correction\ —\ when\ and\ how\ to\ file\.\ Deadlines,\ procedures,\ justification,\ penalties\.\ Complete\ guide\ for\ entrepreneurs\.
PIT / CIT
Income tax, tax reliefs, annual settlements, Estonian CIT
Income\ Tax\ in\ 2026\ —\ PIT\ and\ CIT,\ Complete\ Guide\ \|\ Accounting365
Complete\ guide\ to\ PIT\ and\ CIT\ in\ 2026\.\ Progressive\ tax\ scale\ vs\.\ 19%\ flat\ tax,\ Estonian\ CIT,\ IP\ Box,\ tax\ credits,\ tax\-free\ threshold,\ prepayments\ —\ everything\ you\ need\ to\ know\.
Estonian\ CIT\ in\ 2026\ —\ conditions,\ benefits\ and\ pitfalls\ \|\ Accounting365
Estonian\ CIT\ in\ 2026:\ what\ it\ is,\ who\ can\ use\ it,\ 10%/20%\ rates,\ maintenance\ conditions,\ comparison\ with\ standard\ CIT,\ practical\ examples\ and\ FAQ\.
IP\ Box\ Relief\ 5%\ for\ Programmers\ 2026\ —\ How\ to\ Use\?\ \|\ Accounting365
IP\ Box\ relief\ for\ programmers\ —\ 5%\ tax\ on\ Software\ and\ patent\ income\.\ Complete\ guide:\ who\ can\ use,\ nexus\ ratio,\ documentation,\ step\ by\ step\.
Linear\ PIT\ 19%\ —\ When\ Is\ It\ Worth\ It\ vs\.\ Progressive\ \|\ Accounting365
Linear\ PIT\ 19%\ vs\.\ progressive\ 12/32%:\ break\-even\ point,\ insurance\ relief,\ when\ it's\ profitable\.\ Examples,\ comparisons,\ FAQ\.\ Complete\ guide\ for\ entrepreneurs\.
How\ to\ File\ PIT\-36\ for\ 2025\ —\ Step\-by\-Step\ Guide\ \|\ Accounting365
Step\-by\-step\ instructions\ for\ filing\ PIT\-36\ for\ 2025\.\ Deadline\ April\ 30,\ 2026\.\ PIT/B\ and\ PIT/O\ attachments,\ deductions,\ joint\ filing,\ common\ mistakes\.
Personal\ Income\ Tax\ Free\ Allowance\ 2026\ —\ 30,000\ PLN
Personal\ income\ tax\ free\ allowance\ 2026:\ 30,000\ PLN\.\ How\ it\ works,\ who\ qualifies,\ comparison\ with\ tax\ reduction\ and\ application\ conditions\.
PIT\-28\ Flat\ Rate\ Settlement\ —\ 2025\ Annual\ Return\ \|\ Accounting365
PIT\-28\ flat\ rate\ settlement\ for\ 2025:\ deadline\ April\ 30\ 2026,\ how\ to\ file,\ required\ documents,\ revenue\ cards,\ practical\ guide\ for\ entrepreneurs\.
Child\ Tax\ Relief\ 2026\ —\ How\ Much\ and\ Who\ Can\ Claim\?
Child\ tax\ relief\ 2026\ —\ how\ much\ and\ who\ can\ claim\?\ 1100\-2700\ PLN,\ income\ limits,\ deduction\ rules\.\ Guide\ for\ parents\.
CIT\ 9%\ for\ Small\ Taxpayer\ in\ 2026\ —\ Limit\ and\ Conditions
CIT\ 9%\ for\ small\ taxpayer\ in\ 2026\ —\ how\ to\ meet\ 8\.431\ million\ PLN\ revenue\ limit,\ conditions\ and\ comparison\ with\ 19%\ standard\ rate\.\ Guide\ for\ limited\ liability\ companies\.
PIT\ Advances\ —\ Monthly\ or\ Quarterly\?\ What\ to\ Choose\ \|\ Accounting365
PIT\ advances\ 2026:\ when\ to\ pay\ monthly,\ when\ quarterly,\ calculations,\ examples\.\ Guide\ for\ entrepreneurs\.
Social Security & Contributions
ZUS contributions, Small ZUS, PPK, sick leave, start-up relief
ZUS\ Compendium\ for\ Entrepreneurs\ 2026\ —\ All\ Contributions\ Guide\ \|\ Accounting365
Complete\ ZUS\ guide\ for\ entrepreneurs\ 2026:\ all\ contributions\ \(pension,\ disability,\ health,\ accident,\ sick\),\ rates,\ exemptions,\ payment\ procedures,\ practical\ examples\.
Small\ ZUS\ Plus\ 2026\ —\ conditions,\ limits,\ and\ how\ to\ apply\ \|\ Accounting365
Small\ ZUS\ Plus\ 2026:\ eligibility\ conditions,\ 120,000\ PLN\ income\ limit,\ contribution\ amounts,\ DRA\ form\.\ For\ whom\?\ How\ much\ savings\?
Small\ ZUS\ Plus\ 2026\ —\ First\ 24\ Months\ Preferential\ Rates\ \|\ Accounting365
Small\ ZUS\ Plus\ 2026:\ preferential\ contribution\ rates\ for\ new\ entrepreneurs\ in\ first\ 24\ months\.\ Rates,\ conditions,\ eligibility,\ savings\ calculator,\ deadlines\.
Voluntary\ Pension\ Funds\ —\ Employer\ Obligations\ 2026\ \|\ Accounting365
Employer\ obligations\ for\ Voluntary\ Pension\ Funds\ in\ 2026\.\ Contribution\ rates,\ registration\ deadlines,\ employee\ rights,\ penalties\ for\ non\-compliance\.
Social\ Insurance\ and\ Sickness\ Allowance\ for\ Entrepreneurs\ 2026\ \|\ Accounting365
Complete\ guide\ to\ ZUS\ social\ insurance\ and\ sickness\ benefits\ for\ Polish\ entrepreneurs\ in\ 2026\.\ Contribution\ rates,\ sickness\ allowance\ eligibility,\ and\ payment\ rules\.
ZUS\ for\ Student\ Entrepreneurs\ 2026\ \|\ Accounting365
ZUS\ for\ students\ running\ business\ 2026:\ exemptions,\ Student\ Entrepreneur\ status,\ contribution\ obligations,\ combining\ studies\ with\ self\-employment\.
Startup\ Relief\ —\ 6\ Months\ Without\ ZUS\ at\ Business\ Start\ \|\ Accounting365
Startup\ relief\ is\ exemption\ from\ ZUS\ contributions\ for\ 6\ months\ for\ new\ entrepreneurs\.\ Conditions,\ health\ insurance\ amount,\ when\ 6\-month\ period\ begins\.
Do\ you\ pay\ ZUS\ on\ B2B\?\ Contributions\ and\ reliefs\ 2026\ \|\ Accounting365
Do\ you\ pay\ ZUS\ on\ B2B\?\ Who\ must\ pay,\ contribution\ amounts\ in\ 2026,\ relief\ options\ \(Start\ relief,\ Small\ ZUS\ Plus\),\ practical\ guide\.
ZUS\ Contributions\ 2026\ —\ Complete\ Table\ of\ Monthly\ Amounts\ \|\ Accounting365
ZUS\ contributions\ 2026:\ full\ table\ of\ monthly\ amounts\ for\ entrepreneurs\.\ Comparison\ of\ standard\ ZUS,\ small\ ZUS,\ and\ Mały\ ZUS\ Plus\.\ Pension,\ disability,\ accident,\ sick\ leave,\ hea\.\.\.
Business Formation
CEIDG, companies, KRS, costs, registration, closing a business
How\ to\ Set\ Up\ a\ Business\ in\ Poland\ from\ A\ to\ Z\ —\ 2026\ Guide\ \|\ Accounting365
Complete\ guide:\ how\ to\ set\ up\ a\ business\ in\ Poland\ in\ 2026\.\ Sole\ proprietorship,\ limited\ company,\ registration,\ costs,\ taxes,\ social\ security\ —\ everything\ step\ by\ step\.
Business\ Operating\ Costs\ 2026\ —\ Complete\ Cost\ Breakdown\ \|\ Accounting365
Complete\ 2026\ business\ operating\ costs:\ ZUS,\ taxes,\ accounting,\ bank\ fees,\ insurance\.\ Actual\ costs\ for\ sole\ trader\ vs\ LLC\.\ How\ to\ reduce\ expenses\.
Partnership\ vs\ LLC\ —\ Which\ is\ Better\ Tax\-Wise\ in\ 2026\?\ \|\ Accounting365
Partnership\ vs\ LLC\ in\ 2026:\ tax\ treatment,\ effective\ tax\ rates,\ double\ taxation,\ general\ partner\ liability,\ when\ each\ form\ is\ profitable\.\ Complete\ comparison\.
JDG\ vs\ Sp\.\ z\ o\.o\.\ —\ Which\ to\ Choose\ in\ 2026\?\ \|\ Accounting365
Comparison\ of\ JDG\ \(Partnership\)\ vs\ Sp\.\ z\ o\.o\.\ \(Limited\ Company\)\ in\ 2026\.\ Taxes,\ ZUS\ costs,\ liability,\ registration\ fees\.\ Which\ structure\ is\ best\ for\ your\ business\?
How\ much\ does\ it\ cost\ to\ set\ up\ Sp\.\ z\ o\.o\.\ in\ 2026\?
Cost\ breakdown\ for\ establishing\ Limited\ Liability\ Company:\ court\ fees,\ notary\ fees,\ and\ all\ registration\ charges\ in\ 2026\.
Unregistered\ Business\ Activity\ in\ 2026\ —\ Limits\ and\ Rules
Unregistered\ business\ activity\ in\ 2026\ —\ revenue\ limit\ 10,813\.50\ PLN\ per\ quarter,\ conditions,\ rules,\ and\ when\ to\ register\ a\ company\.\ Practical\ guide\ for\ beginners\.
KRS\ —\ National\ Court\ Register:\ How\ to\ Check\ Companies\ \|\ Accounting365
Complete\ guide\ to\ checking\ companies\ in\ KRS\ \(National\ Court\ Register\)\.\ Learn\ how\ to\ verify\ business\ details,\ understand\ company\ status,\ capital,\ management,\ and\ safely\ conduct\ b\.\.\.
NIP,\ REGON,\ KRS\ —\ what\ are\ the\ differences\ and\ when\ do\ you\ need\ them\?
NIP,\ REGON,\ KRS\ —\ what\ are\ the\ differences\ and\ when\ do\ you\ need\ them\?\ Guide\ for\ entrepreneurs:\ definitions,\ functions,\ when\ to\ obtain\ and\ how\ to\ verify\ a\ company\ in\ registries\.
How\ to\ Close\ a\ Sole\ Proprietorship\ —\ Complete\ Guide\ \|\ Accounting365
How\ to\ close\ a\ sole\ proprietorship\ in\ 2026\?\ Step\ by\ step:\ CEIDG\-1\ form,\ social\ security\ obligations,\ VAT\ and\ income\ tax\ settlement,\ bank\ account\ closure,\ deadlines\.
How\ to\ Register\ a\ Business\ Through\ CEIDG\ Online\ —\ Guide\ \|\ Accounting365
Step\-by\-step\ guide\ to\ registering\ a\ sole\ proprietorship\ through\ CEIDG\.\ Online\ registration,\ required\ documents,\ NIP,\ REGON\.\ Free\ and\ same\-day\ registration\.
Payroll & HR
Umowy, wynagrodzenia, urlopy, ZUS pracowników, kodeks pracy
Payroll\ and\ HR\ in\ 2026\ —\ Complete\ Employer's\ Guide
Complete\ guide\ to\ payroll\ and\ HR\ in\ 2026\.\ Employment\ contract\ types,\ minimum\ wage,\ employer\ obligations,\ leave,\ PPK,\ health\ and\ safety,\ and\ termination\ procedures\.
Minimum\ Wage\ 2026\ —\ Gross,\ Net\ and\ Employer\ Costs\ \|\ Accounting365
Minimum\ wage\ 2026:\ 4,806\ PLN\ gross,\ 3,575\.85\ PLN\ net\.\ Employer\ costs\ \~5,790\ PLN,\ hourly\ rate\ 31\.40\ PLN\.\ 2020\-2026\ changes\ table,\ calculations\ and\ FAQ\.
Vacation\ Leave\ in\ 2026\ —\ How\ Many\ Days\ and\ How\ to\ Calculate\?\ \|\ Accounting365
Complete\ guide\ to\ vacation\ leave\ in\ 2026:\ 20\ vs\ 26\ days,\ seniority\ credit,\ proportional\ leave,\ equivalence\ payment,\ carryover\ to\ September\ 30\.\ All\ you\ need\ to\ know\.
Engagement\ Agreement\ vs\ Work\-for\-Hire\ Contract\ —\ Key\ Differences\ in\ 2026\ \|\ Accounting365
Detailed\ comparison\ of\ engagement\ agreements\ vs\ work\-for\-hire\ contracts\ in\ 2026\.\ Analyze\ ZUS\ contributions,\ taxes,\ cost\ deductions,\ reporting\ requirements,\ and\ legal\ implication\.\.\.
Remote\ Work\ —\ Regulations\ and\ Employer\ Obligations\ in\ 2026\ \|\ Accounting365
Remote\ work\ regulations\ and\ employer\ obligations\ in\ 2026\.\ Costs,\ flat\ rate,\ control,\ occasional\ remote\ work\ 24\ days\.\ Complete\ guide\ for\ HR\ professionals\.
Employee\ Sick\ Leave\ —\ Employer\ Obligations\ 2026\ \|\ Accounting365
Complete\ guide\ to\ employer\ obligations\ for\ employee\ sick\ leave\ 2026:\ e\-ZLA\ confirmation,\ sick\ pay\ calculations,\ ZUS\ compliance,\ penalties,\ best\ practices\.
Employee\ Payroll\ Costs\ 2026\ —\ How\ Much\ Does\ an\ Employee\ Cost\?\ \|\ Accounting365
Complete\ guide\ to\ employee\ payroll\ costs\.\ Calculate\ real\ employee\ cost\ for\ employer:\ salary,\ social\ security\ contributions,\ benefits\.\ 2026\ calculations\ with\ examples\.
Employment\ Certificate\ —\ What\ It\ Contains\ and\ How\ to\ Complete\?\ 2026\ Template
Employment\ certificate\ —\ what\ it\ contains,\ how\ to\ fill\ it\ out,\ and\ what\ information\ must\ be\ included\.\ Template\ 2026,\ deadlines,\ employer\ obligations\.
Employment\ Contract\ Termination\ Notice\ —\ Table\ and\ Exceptions\ \|\ Accounting365
Employment\ contract\ termination\ notice\ periods\ —\ legal\ table,\ timelines\ for\ employees\ and\ employers,\ exceptions,\ and\ new\ changes\ in\ 2026\.\ Polish\ Labor\ Code\.
How\ to\ Calculate\ Net\ Salary\ from\ Gross\ —\ 2026\ Guide\ \|\ Accounting365
Complete\ guide:\ how\ to\ calculate\ net\ salary\ from\ gross\ in\ 2026\.\ Social\ security\ contributions,\ health\ insurance,\ income\ tax\ rates,\ step\-by\-step\ calculation\ with\ examples\.
KSeF / JPK / Digitalization
KSeF, JPK, e-Doręczenia, fakturowanie, automatyzacja
KSeF\ 2026\ —\ Complete\ Guide\ to\ National\ e\-Invoicing\ System\ \|\ Accounting365
Complete\ guide\ to\ KSeF\ 2026\ \(Krajowy\ System\ e\-Faktur\)\.\ Learn\ requirements,\ implementation\ timeline,\ system\ integration,\ mandatory\ registration,\ and\ compliance\ procedures\.
E\-Delivery:\ How\ to\ Set\ Up\ a\ Mailbox\ \|\ Accounting\ 365
Step\-by\-step\ guide\ to\ setting\ up\ an\ E\-Delivery\ mailbox\.\ Learn\ how\ to\ register,\ configure\ settings,\ and\ receive\ official\ documents\ electronically\.
How\ to\ Choose\ an\ Online\ Accounting\ Firm\?\ 10\ Selection\ Criteria\ \|\ Accounting365
10\ criteria\ for\ choosing\ an\ online\ accounting\ firm:\ experience,\ price,\ KSeF,\ support,\ certificates,\ reviews\.\ How\ to\ avoid\ traps\ and\ choose\ the\ best\ office\ for\ your\ business\?
Best\ Invoicing\ Software\ 2026\ —\ Ranking\ \|\ Accounting365
Ranking\ of\ best\ invoicing\ software\ 2026\.\ Comparison:\ Fakturownia,\ inFakt,\ wFirma,\ iFirma,\ FakturaXL,\ Comarch,\ Symfonia\.\ Prices,\ KSeF,\ reviews\.
Electronic\ Invoice\ Archiving\ —\ How\ Long\ and\ How\ to\ Store\?
Electronic\ invoice\ archiving:\ How\ many\ years\ to\ keep\ invoices\?\ 2026\ regulations,\ KSeF,\ 5\-year\ retention,\ storage\ systems\.
Automating\ Accounting\ with\ AI\ in\ 2026\ —\ What's\ Possible\?
Automating\ accounting\ with\ AI\ in\ 2026\ —\ which\ processes\ can\ be\ automated\?\ Available\ AI\ tools,\ impact\ on\ accountants,\ and\ how\ to\ implement\ automation\ in\ your\ firm\.
How\ to\ Issue\ Your\ First\ Invoice\ in\ KSeF\ —\ Step\ by\ Step\ \|\ Accounting365
Complete\ guide\ to\ issuing\ invoices\ in\ KSeF\ \(Polish\ e\-Invoice\ System\)\.\ Profile\ setup,\ tool\ selection,\ invoice\ details,\ UPO\ confirmation\.\ Practical\ guide\ for\ VAT\ taxpayers\ 2026\.
JPK_FA\ –\ What\ it\ is\ and\ who\ must\ file\ \|\ Accounting365
What\ is\ JPK_FA\?\ Who\ must\ file\ electronic\ invoice\ control\ files\?\ Exemptions,\ deadlines,\ penalties\ and\ practical\ advice\ for\ 2026\.
KSeF\ for\ Small\ Businesses\ —\ Is\ It\ Worth\ It\?
KSeF\ for\ small\ businesses:\ Is\ the\ e\-invoicing\ system\ worth\ it\?\ Revenue\ 10,000\ PLN,\ JDG,\ deferral\ until\ 2027\.\ Guide\ for\ businesses\ below\ the\ limit\.
KSeF\ —\ Penalties\ for\ Non\-implementation\ from\ 2026
KSeF\ —\ penalties\ for\ non\-implementation\ from\ 2026\.\ Sanctions,\ implementation\ schedule,\ tax\ amnesty,\ entrepreneur\ responsibility\.\ Practical\ guide\.
Foreigners in Poland
Firma cudzoziemca, rezydencja podatkowa, umowy o unikaniu
Company\ in\ Poland\ for\ a\ foreigner\ —\ complete\ guide\ 2026
How\ to\ establish\ a\ company\ in\ Poland\ as\ a\ foreigner:\ NIP/REGON/PESEL,\ bank\ account,\ visa\ requirements,\ registration\ process,\ costs\ and\ timeline\.\ Full\ guide\ step\ by\ step\.
Tax\ Residency\ in\ Poland\ \|\ Accounting365
Tax\ residency\ in\ Poland:\ 183\-day\ test,\ center\ of\ life\ interests,\ tax\ obligation,\ residency\ certificate\.\ Guide\ for\ foreigners\ and\ international\ workers\.
Company\ in\ Poland\ for\ Ukrainian\ citizen\ —\ special\ rules\ 2026
Complete\ guide\ for\ Ukrainian\ citizens\ setting\ up\ a\ company\ in\ Poland\.\ Visa,\ registration,\ taxes\ and\ special\ status\ requirements\.
NIP\ and\ PESEL\ for\ foreigners\ —\ how\ to\ obtain\?\ \|\ Accounting365
Complete\ guide\ for\ foreigners\ on\ obtaining\ NIP\ and\ PESEL\ in\ Poland\.\ Procedures,\ required\ documents,\ forms,\ processing\ times,\ differences\ between\ numbers\.
Business\ Bank\ Account\ for\ Foreigners\ in\ Poland\ —\ Complete\ Guide\ \|\ Accounting365
How\ to\ open\ a\ business\ bank\ account\ as\ a\ foreigner\ in\ Poland\.\ Required\ documents,\ which\ banks\ accept\ foreigners,\ AML/KYC\ procedures,\ cost\ comparison\.
Social\ Insurance\ for\ Foreigners\ Operating\ a\ Sole\ Proprietorship\ in\ Poland\ \|\ Accounting365
Complete\ guide\ to\ ZUS\ social\ insurance\ for\ foreign\ entrepreneurs\ in\ Poland:\ eligibility,\ contribution\ rates,\ EU\ citizen\ differences,\ and\ registration\ requirements\ for\ JDG\ sole\ p\.\.\.
LLC\ for\ Foreigner\ Without\ Poland\ Residence\ —\ Is\ it\ Possible\?\ \|\ Accounting365
Can\ a\ foreigner\ without\ Polish\ residence\ found\ an\ LLC\?\ Registration\ requirements,\ documents,\ remote\ management,\ legal\ support\ for\ foreign\ entrepreneurs\.
Avoiding\ Double\ Taxation\ Poland–Ukraine\ —\ Treaty\ and\ Rules\ \|\ Accounting365
Complete\ guide\ to\ avoiding\ double\ taxation\ between\ Poland\ and\ Ukraine\.\ Treaty\ on\ avoidance\ of\ double\ taxation,\ tax\ credits,\ settlement\ rules,\ practical\ examples\ for\ entrepreneurs\.
Can\ a\ foreigner\ use\ flat\-rate\ tax\ in\ Poland\?
Can\ a\ foreigner\ use\ flat\-rate\ tax\ in\ Poland\?\ Residency\ requirements,\ 2026\ rates,\ income\ limits\ for\ foreigners\.\ Practical\ guide\ for\ foreign\ entrepreneurs\.
VAT\ for\ Foreigners\ Selling\ Abroad\ from\ Poland\ 2026\ \|\ Accounting365
VAT\ rules\ for\ foreigners\ operating\ business\ in\ Poland:\ registration\ requirements,\ digital\ services,\ VAT\ treatment,\ and\ compliance\.\ Complete\ guide\ for\ non\-residents\.
Legal Changes 2025–2026
Nowe przepisy, limity, kalendarz zmian, Polski Ład
Tax\ Changes\ Calendar\ 2026\ —\ What,\ When,\ and\ Who\ Is\ Affected
Complete\ calendar\ of\ tax\ changes\ in\ 2026\ —\ what,\ when,\ and\ who\ is\ affected\.\ KSeF,\ VAT,\ CIT,\ PIT,\ ZUS\ changes,\ e\-delivery,\ and\ Global\ Minimum\ Tax\.\ Practical\ guide\ with\ all\ deadli\.\.\.
New\ tax\ limits\ 2026\ —\ revenue,\ VAT,\ flat\ rate,\ KPiR
New\ tax\ limits\ 2026\ in\ Poland\ —\ revenue,\ VAT,\ flat\ rate,\ KPiR\.\ Complete\ review\ with\ tables\ and\ comparison\ to\ 2025\.
Polish\ Deal\ —\ What\ Remains\ in\ 2026\?\ \|\ Accounting365
Complete\ review\ of\ Polish\ Deal\ regulations\ currently\ in\ effect\ in\ 2026\.\ Tax\-free\ threshold\ 44,536\ PLN,\ child\ credits,\ thermomodernization,\ child\ benefits\ —\ all\ details\ explained\.
Changes\ in\ Polish\ Labor\ Law\ 2025\-2026\ —\ Employment\ Guide\ \|\ Accounting365
Labor\ law\ changes\ 2025\-2026\ Poland:\ minimum\ wage,\ working\ time,\ remote\ work,\ leave\ policies,\ termination\ procedures,\ and\ new\ employer\ obligations\.\ Complete\ guide\.
Cash\-Basis\ PIT\ from\ 2025\ —\ for\ whom\ and\ how\ does\ it\ work\?
Cash\-Basis\ PIT\ from\ 2025\ —\ cash\ method\ in\ income\ tax\.\ For\ whom\?\ How\ does\ it\ work\?\ Revenue\ limits,\ conditions\ of\ use\.\ Comparison\ with\ accrual\ method\.
SLIM\ VAT\ 4\ —\ Key\ Changes\ in\ 2026\ \|\ Accounting365
SLIM\ VAT\ 4\ —\ the\ most\ important\ VAT\ changes\ in\ 2026\.\ VAT\ warehouse,\ JPK\ simplifications,\ entity\ registration,\ deregistration\ without\ VAT\-Z\.\ Practical\ guide\ for\ businesses\.
Global\ minimum\ tax\ 15%\ —\ does\ it\ apply\ to\ Polish\ companies\?
Global\ minimum\ tax\ 15%\ \(Pillar\ Two\)\ —\ does\ it\ apply\ to\ Polish\ companies\ in\ 2026\?\ Conditions,\ obligations,\ exemptions\ and\ practical\ calculations\.
E\-invoicing\ obligation\ —\ when\ and\ who\ does\ it\ affect\ in\ 2026\?
E\-invoicing\ obligation\ 2026\ —\ when\ and\ who\ does\ it\ affect\?\ KSeF\ implementation\ schedule,\ phases\ for\ different\ taxpayers,\ penalties\ for\ non\-compliance\.
Whistleblower\ in\ Company\ —\ New\ Obligations\ from\ 2026
Whistleblower\ protection\ in\ companies\ —\ new\ employer\ obligations\ from\ 2026\.\ Whistleblower\ Act,\ reporting\ procedures,\ protection\ from\ retaliation,\ and\ sanctions\ for\ violations\.
New\ PIT\ form\ 2026\ —\ what\ changed\ in\ the\ forms\?
New\ PIT\ form\ 2026\ —\ what\ changed\ in\ tax\ forms\?\ PIT\-36,\ PIT\-36S,\ new\ declarations\.\ Practical\ guide\ to\ form\ changes\.
Full Accounting
Sprawozdania, amortyzacja, audyt, plan kont, inwentaryzacja
Full\ Accounting\ —\ Who\ Must\ Maintain\ and\ How\ \|\ Accounting365
Full\ accounting\ requirements:\ who\ must\ maintain,\ elements,\ chart\ of\ accounts,\ financial\ statements,\ closing\ procedures,\ deadlines\.\ Complete\ guide\ for\ companies\.
Financial\ Statements\ 2025\ —\ Deadlines\ and\ How\ to\ File\ in\ 2026\ \|\ Accounting365
Financial\ statements\ 2025:\ filing\ deadlines\ \(March\ 31,\ June\ 30,\ July\ 15\),\ e\-statement\ JPK_SF\ requirements,\ penalties\ for\ delay\.\ Step\-by\-step\ guide\.
Depreciation\ of\ fixed\ assets\ in\ 2026\ —\ methods\ and\ rates\ \|\ Accounting365
Fixed\ assets\ depreciation\ 2026:\ methods\ \(linear,\ accelerated,\ one\-off\),\ KŚT\ rates,\ limits,\ cars,\ buildings,\ structures\.\ Guide\ for\ entrepreneurs\.
Financial\ Statement\ Audit\ —\ When\ Is\ It\ Mandatory\?
Financial\ statement\ audit\ —\ when\ is\ it\ mandatory\?\ 2026\ limits,\ three\-threshold\ criteria,\ audit\ procedure,\ costs\.\ Guide\ for\ limited\ liability\ companies\.
Exchange\ Rate\ Differences\ —\ How\ to\ Correctly\ Account\ for\ Them\?\ \|\ Accounting365
Exchange\ rate\ differences\ —\ how\ to\ correctly\ account\ for\ them\?\ Balance\ sheet\ and\ tax\ method,\ foreign\ currency\ invoices,\ VAT\ and\ exchange\ differences\.\ Guide\ for\ entrepreneurs\.
Annual\ inventory\ —\ obligations,\ deadlines\ and\ methods
Annual\ inventory\ requirements:\ physical\ stock\ count,\ valuation\ methods,\ accounting\ procedures\ and\ legal\ penalties\.
Chart\ of\ Accounts\ for\ Limited\ Company\ —\ Template\ and\ Structure\ \|\ Accounting365
Chart\ of\ accounts\ for\ Sp\.\ z\ o\.o\.:\ structure,\ account\ groups,\ classification,\ templates,\ practical\ examples\.\ How\ to\ set\ up\ and\ maintain\ chart\ of\ accounts\.
Write\-down\ of\ receivables\ —\ when\ and\ how\ to\ create\?
Write\-down\ of\ receivables\ —\ when\ and\ how\ to\ create\?\ Doubtful\ receivables,\ accounting,\ write\-down\ amount,\ annual\ settlement\.\ Guide\ for\ entrepreneurs\.
Blog Content Plan
Our blog systematically covers all key topics of Polish accounting. Here's what you'll find in each category:
Bookkeeping & Flat Tax
Columns, limits, taxation form comparisons, corrections, non-deductible expenses
VAT
Registration, rates, split payment, reverse charge, company car, EU transactions
PIT / CIT
Annual settlements, tax reliefs, Estonian CIT, tax-free amount, flat-rate PIT, advances
Social Security & Contributions
Contribution table, Small ZUS Plus, preferential, PPK, sick leave, start-up relief, B2B
Business Formation
CEIDG, LLC, KRS, NIP/REGON, costs, closing a business, unregistered
Payroll & HR
Salaries, contracts, leave, work certificates, employment costs, remote work
KSeF / JPK / Digitalization
E-invoicing, JPK_VAT, e-Delivery, automation, invoicing software, penalties
Foreigners in Poland
Foreigner's company, tax residency, NIP/PESEL, bank account, ZUS, EU VAT
Legal Changes 2025–2026
Change calendar, new limits, SLIM VAT 4, Polski Ład, whistleblower, cash PIT, e-invoices
Full Accounting
Reports, depreciation, audit, chart of accounts, exchange rate differences, inventory, write-offs
New articles are published regularly. Follow our blog to stay up-to-date with Polish accounting regulations and changes.
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