The largest taxpayers
from 1 February 2026 invoices issued in KSeF
- Sales including VAT above 200 million zł in 2024
Accounting · Warsaw and remote
Accounting where the deadlines are not yours to watch
We keep the books of companies and sole traders. Documents come to us as a photo or a file, we file the returns ourselves, and the reminder about an approaching deadline comes from us, not from the tax office.
We quote after seeing one month of your documents, not from a price list.
Sp. z o.o.
Full books
Accounting books, CIT, financial statements, support for the board and the shareholders. Including companies with foreign nationals on board.
See the scope → Sole trader and lump sumSole-trader accounting
The revenue and expense ledger (KPiR) or a lump sum, social security, the annual PIT. A separate page covers the tax forms and what to choose at the start.
Go there →What we take on
The scope is agreed before the first month and written into the contract. There is no line saying “and so on”: that is where surcharges are born.
Ledger or lump sumA revenue and expense ledger, lump-sum records or full accounting books, depending on the form and size of the business.
VAT and JPKRegisters, the JPK_V7 file (the monthly VAT return with the sales and purchase registers), cross-border transactions and EU VAT if you sell or buy outside Poland.
The owner's social securityRegistrations, monthly declarations, and watching when the start-up relief or the reduced contribution period runs out.
Payroll and HRContracts, payroll runs, employee registrations, PIT-11 forms, employment certificates. Foreign employees included.
Annual settlementsPIT or CIT-8, the company's financial statements and filing them with the court register.
Letters from the officeWe collect them, put them into plain language and answer in time. A letter left unanswered is the costliest item of all.
A company and a sole trader are different work
Sp. z o.o.: full books
A company keeps full accounting books from day one, whatever its turnover. That means a chart of accounts, an accounting policy, a balance sheet and a profit and loss account, and at year end financial statements signed electronically by the board.
Then come the things a sole trader never sees: shareholder resolutions, profit distributions, settlements with board members, transactions with related companies. Each leaves a trace in the books and in the returns.
Sole trader: a ledger or records
A sole trader keeps a revenue and expense ledger, or revenue records under the lump sum. There is less work, but the choice of tax form weighs more than the bookkeeping itself: under the lump sum costs cannot be deducted, and the rate depends on what exactly you do.
The form is changed within a statutory window at the start of the year, not at the moment it turns out to be wrong. That is why we discuss it separately when registering the business.
KSeF: invoices move into a state system
The national e-invoicing system becomes mandatory during 2026: first for the largest taxpayers, then for everyone else. Invoices to consumers and a few exceptions until the end of 2026 stay outside the system.
All other businesses
from 1 April 2026 invoices issued in KSeF
- Sole traders and VAT-exempt taxpayers too, when they invoice businesses
Invoices up to 10,000 zł a month
from 1 January 2027 invoices issued in KSeF
- Until the end of 2026 they may be issued outside KSeF. What counts is total sales including VAT on one month's invoices.
- Invoices from cash registers also stay outside KSeF until the end of 2026.
What changesInvoices are issued and received through a state system in a set format. Paper and PDF remain only in exceptions, such as invoices to consumers.
Receiving invoicesFrom 1 February 2026 every business receives invoices through KSeF, even one that still issues its own outside the system.
What we doWe set up user permissions in the system, configure issuing and receiving, and go through the first month together with you.
What we do not doWe do not sell “KSeF readiness” as a separate product paid up front. It is part of keeping your books, not an extra.
The deadlines we keep track of for you
All we need is the month's documents by the fifth day of the next one. Everything else we count backwards from that date.
Every month
by the 20th and 25th of the following month
- Social security: a spółka z o.o. by the 15th, a sole trader by the 20th, employees or not
- PIT or CIT advance payment: by the 20th
- JPK_V7 and VAT: by the 25th
Once a year
March and April annual settlement
- Company CIT-8: by 31 March
- Sole trader's PIT: by 30 April
- Financial statements: signed by 31 March, filed with the KRS within 15 days of approval
When a deadline is lost anyway
When documents arrive late or not at all. Then we call: a voluntary disclosure filed in time costs less than a penalty.
Ask for a quoteWhat you will not hear from us
“We will arrange your VAT refund”A refund depends on the documents and on the tax office, not on an accountant. What we can do is prepare a return with no errors in it.
“Cheapest in town”Such an advert always ends in surcharges for items it never mentioned. We quote after one month of documents.
“An accountant knows everything”Disputed tax matters belong to a tax adviser or a lawyer. We say when a case goes beyond bookkeeping.
“All by phone”The contract, a UPL-1 form (a power of attorney for filing tax returns) and access to the online tax office all need your signature. Without them we cannot file anything for you.
Changing accountants mid-year
It can be done in any month, but the order matters. We start with what stays at the previous firm, not with signing a contract with us.
NoticeWe check the notice period in your current contract and when we can realistically take the books over.
Collecting documentsThe list never changes: books from the start of the year, VAT registers, the fixed-asset register, contracts and personnel files.
Checking balancesBefore the first settlement we check balances and open items. An error from before the handover is better found at once, because your company answers for it, not the accounting office.
Powers of attorneyUPL-1 for e-filing, access to the ZUS e-services portal (PUE ZUS) and to KSeF. Without them we cannot file anything in your name.
The first monthWe run it alongside you, showing what goes where, so that the next ones need no questions.
Earlier yearsIf previous years left gaps, we say plainly what a correction can still fix and what it cannot.
Questions we hear at the first meeting
What does the price depend on?
On the number of documents a month, the legal form, VAT status and how many people you employ. That is why we ask for one ordinary month of documents and only then name a figure. A price quoted off a list usually grows by the third month.
Do I have to bring paper to your office?
No. A photo or a file is enough. We will take paper if you prefer it, but nothing needs it. Once KSeF is running, sales and purchase invoices will travel electronically anyway.
I run a business but do not speak Polish. Will we manage?
Yes. We speak Ukrainian and English, and we translate letters from the office into plain language along with what they are about and by when they must be answered.
Who is liable if there is a mistake?
Before the tax office the taxpayer is liable, which means the business. The accounting office is liable to its client for its own work and carries mandatory professional insurance. We say this at the start, because it is the first thing adverts leave out.
Can you register the business and then run its books?
Yes, and that is the most common case. At registration we calculate the tax form options for what you will actually be doing. You make the choice instead of leaving the default on the application. Registration is described on a separate page.
I am behind on previous months. Would you take such a business?
We would, but first we measure the scale: how many months, which returns, and whether the office is already involved. Only then do we say what can be repaired and what it costs. Without that conversation we quote nothing.
When does a company file its financial statements?
If the financial year is the calendar year: prepare them by 31 March, have the shareholders approve them by 30 June, and file them with the KRS within 15 days of approval. These are articles 52, 53 and 69 of the Accounting Act. We keep track of all three dates.
Ask for a quote
Legal form, VAT status and the number of documents a month — after those three answers we give a range straight away. The exact figure follows once we have seen one month of documents.
Phone+48 574 679 797
E-mail[email protected]
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HoursMonday – Friday, 9:00 – 17:00
OfficeŻurawia 6/12 lok. 749, 00-503 Warsaw
Company registrationSetting up a company or sole trader