We retrieve invoices from KSeF, keep your revenue records and prepare your tax calculations. You know how much tax and ZUS to pay, and when. A dedicated accountant oversees it all. For Polish sole traders paying ryczałt, the lump-sum tax on recorded revenue.
August 2026
SettledDue this month
6,329.13PLN
Ryczałt 8.5%
Tax micro-account
1,921.00 PLN
due 20 Sep
ZUS social
DRA filed
1,646.47 PLN
due 20 Sep
ZUS health
Ryczałt, band I
461.66 PLN
due 20 Sep
VAT
JPK_V7M sent
2,300.00 PLN
due 25 Sep
Registers and filings PlusBook works with: KSeF, CEIDG, GUS REGON, Wykaz podatników VAT, VIES, JPK_EWP, JPK_V7, PIT-28, Mikrorachunek podatkowy, ZUS DRA.
How it works
An ordinary month asks nothing of you. An unusual one asks a single question you can answer in a sentence.
And nothing else. Your name, address, REGON, PKD codes and start date come from CEIDG; your VAT status and business account from the VAT taxpayer register.
One authorisation. From then on invoices reach us by themselves - no sending PDFs, no photographing receipts, no month-end panic.
We work out what each line is for, pick the right ryczałt rate and keep the revenue records. The amounts are computed by a tax engine - with a specific provision behind every figure.
How much ryczałt, how much ZUS, by when and to which account - with the transfer ready inside it. We file the JPK returns on your behalf and collect the UPO receipt.
What we do
We serve sole traders settling under ryczałt, the lump-sum tax on recorded revenue: VAT-registered or not, monthly or quarterly, and with several rates at once.
We pull them daily and assign the right ryczałt rate straight away. You send nothing and retype nothing.
Software development
Nordvind sp. z o.o.
Workshop and consulting
Studio Kreska
Property rental
Fundacja Wschód
Each calculation includes the method and legal basis. If you need an explanation, you can contact your accountant.
Why did the ryczałt come out at 1,921 PLN?
Kept as the month goes, by the date the revenue arose. Corrections are booked in the month the correcting invoice was issued.
JPK_EWP every month, JPK_V7 if you are VAT-registered, PIT-28 after the year ends. The UPO receipt is stored with the settlement.
Ryczałt to your tax micro-account, contributions to ZUS. Amount, reference and deadline - copied in one click.
You give us the client's number and we fetch the rest from REGON and the VAT register. Numbered from your own series, sent to KSeF.
The 20th and the 25th, public-holiday shifts, quarters, PIT-28 - you get a reminder before a deadline turns into a problem.
Your accountant
Algorithms handle repetitive tasks while a dedicated accountant supervises your books. You can see the calculations and speak to the person who oversees them.
Calculation example · August 2026
Automated algorithms calculate amounts using stored tax rules. Each calculation retains the rate applied, the legal basis and the method used.
If we need more information about your services to determine the tax rate, we will ask you for those details.
A dedicated accountant supervises your bookkeeping. Automation reduces manual data entry and repetitive work. When you have a question, you can contact your accountant.
Company data comes from CEIDG, REGON and the VAT taxpayer register, and every lookup is documented - together with proof of due diligence on your counterparty.
Pricing
You pay monthly for the month being closed. Leave whenever you like - with the whole of your data and records.
Ryczałt · sole trader
59PLN net / month
The same price with VAT and without, on monthly and quarterly settlement, on one ryczałt rate and on several.
Start with your NIPWe settle your first month before you pay.
We serve Polish sole traders paying ryczałt only. We do not handle KPiR, progressive income tax, flat-rate income tax or companies.
Questions
If something is missing here, write to kontakt@plusbook.pl. We will give you a clear answer.
Automated algorithms retrieve data, perform calculations and reduce repetitive work, which keeps the price low. We focus on one type of accounting: Polish sole traders paying ryczałt. A dedicated accountant oversees everything. The price is 59 PLN net per month.
Yes. A dedicated accountant supervises your books. You can contact them to discuss a tax calculation, understand an amount or ask about your ryczałt rate.
Polish sole traders paying ryczałt, the lump-sum tax on recorded revenue. We serve both VAT-registered and VAT-exempt businesses. We do not handle KPiR, progressive income tax, flat-rate income tax or companies.
From 2026 KSeF is mandatory, so your sales invoices go through it anyway. We simply pull them from there automatically instead of asking you to send files. Invoices from outside KSeF are handled too.
We will ask for more information about the service, such as whether it involves advice or delivery. Your answer is saved with your business details.
Yes. We serve sole traders both registered for VAT and exempt from it, on monthly and quarterly settlement. For VAT-registered traders we keep the records and file JPK_V7.
Submit your NIP and contact details. We then agree on your start date, KSeF connection and the month from which we take over your bookkeeping. Earlier periods remain with your current accountant.
At any time, with no notice period. Your records, invoices and filed JPK files together with their UPO receipts download in formats any accounting firm will accept.
Provide your NIP and contact details. We will contact you to arrange when your bookkeeping starts.