When to Change Your Accountant in Poland and How to Do It Without Risk

1. Missed deadlines and penalties
The JPK_V7 VAT file is due by the 25th, ZUS contributions by the 20th, and annual PIT and CIT returns (plus financial statements for an sp. z o.o.) have strict deadlines of their own. If you have already received letters from the Tax Office, arrears notices or late-filing penalties, that is the clearest signal. One incident may be bad luck; repeated ones point to a systemic problem.

2. Frequent errors and corrections
Constant corrections (korekty) of returns, miscalculated taxes and confusion over VAT rates suggest insufficient expertise or an overloaded accountant. Every correction is a potential trigger for a tax audit.

3. Your accountant is unreachable
You wait a week for a reply, and urgent questions get pushed to "after the weekend." A good accountant in Poland responds within a reasonable time and warns you about important changes proactively, without waiting for you to ask.

4. No advice, just bookkeeping
If your accountant has never suggested reviewing your form of taxation (ryczałt, the tax scale or flat-rate linear tax), never mentioned available tax reliefs and never warned you about the consequences of your decisions, you are probably overpaying. Professional accounting includes legal tax optimisation.

5. Your business has grown, but your accountant hasn't
You've set up an sp. z o.o., registered for EU VAT, started selling through OSS, hired employees or begun working with crypto assets, while your accountant specialises only in simple sole proprietorships on ryczałt. A business with international transactions and full accounting (pełna księgowość) needs a different level of expertise.

6. No modern tools and no KSeF readiness
Since 2026, the National e-Invoicing System (KSeF) has been mandatory for most businesses in Poland. If your accountant still asks you to send photos of invoices via messenger, doesn't use electronic document management and can't explain how KSeF is set up for your company, you face a real risk of errors and lost documents.

7. Lack of transparency
You don't know how much tax you'll pay next month, you receive no reports and you have no access to your own data. As a business owner, you should be able to see your financial position at any time, not find out on the payment deadline.

8. Unclear pricing and hidden fees
Your accounting invoice is different every month, with "extra work" you were never told about. An accounting services agreement (umowa o świadczenie usług księgowych) should clearly define the scope of services and the price.

9. Language barrier
For foreign entrepreneurs in Poland, understanding your accountant is essential. If every explanation needs an online translator, there's a real risk of misunderstanding important tax decisions. An accountant who speaks your language and knows Polish law inside out saves you time and stress.

To avoid switching again six months later, check a new accounting firm against these criteria.

Mandatory OC insurance. In Poland, accounting offices must hold professional liability insurance (ubezpieczenie OC). Ask to see the policy; a reliable firm will show it without hesitation.

Experience with your type of business. A sole proprietorship on ryczałt or KPiR and an sp. z o.o. on full accounting are very different tasks. Ask which clients the firm serves most often and whether it has experience in your industry (IT, e-commerce, transport, construction, crypto).

A transparent agreement. The contract should specify the scope of services, the monthly document limit, prices for additional services, the notice period (okres wypowiedzenia) and the document handover procedure when cooperation ends.

Online accounting and KSeF. A modern firm offers electronic document flow, online access to your data and full KSeF integration, so you can work with your accountant from anywhere in Poland.

Communication. Find out how quickly the firm answers questions, whether you'll have a dedicated accountant and which languages they work in.

AML and KYC procedures. Accounting offices in Poland are obliged entities under anti-money laundering law. If a new firm asks you to complete a client form and verify your identity, that's a sign of professionalism, not bureaucracy.

A free consultation. A good firm will review your situation free of charge before you sign and point out any potential issues in your current bookkeeping straight away.

Step 1. Review your current agreement. Find the termination clause: the notice period (usually 1 to 3 months), the required form of notice and the handover terms.

Step 2. Choose your new firm and agree on a start date. Before terminating your current contract, agree with the new accountant on when they will take over, so you're never left without accounting during the transition.

Step 3. Notify your current accountant in writing. Send the termination notice (wypowiedzenie umowy) in the form required by the contract and state clearly the last settlement period they will close.

Step 4. Collect your documents under a handover protocol. The transfer is documented in a handover protocol (protokół zdawczo-odbiorczy) listing every document handed over. This typically includes:

• accounting books (KPiR, revenue records or full accounting ledgers) and JPK files;
• filed returns with their official receipts (UPO);
• HR records and payroll calculations, if you have employees;
• the fixed asset register and depreciation schedules;
• correspondence with the Tax Office and ZUS, decisions and audit results;
• for an sp. z o.o., prior-year financial statements and shareholder resolutions.

Step 5. Update powers of attorney and access rights. Revoke your previous accountant's authorisations (UPL-1 for electronic filing, PPS-1 for representation before the Tax Office, ZUS access via PUE/eZUS) and grant new ones. Don't forget KSeF permissions and banking access.

Step 6. Have the new accountant review the records. Your new accountant should verify the data received: balances, settlements with ZUS and the Tax Office, and the accuracy of past returns. This is where errors made by the previous firm come to light, and it's best to correct them right away.

Step 7. Define responsibilities in writing. Record who files the returns for the previous accountant's last month and who prepares the annual declarations.