Good Balance — reliable accounting and full business services

Professional accounting, HR/payroll and legal support across Poland. We handle sole proprietorships (JDG), companies, business registration and legalization of foreigners.

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About us

End-to-end support for your business

Good Balance delivers a complete range of services for companies, sole traders and your employees. We provide professional support at every stage of running a business — from company or sole-proprietorship registration, through day-to-day operations, to growth and scaling.

Our specialists are well versed in every aspect of running accounting and HR & payroll services for businesses across a wide range of industries:

  • logistics
  • trade
  • services
  • manufacturing
  • hospitality
  • IT sector

Working with our team of lawyers, you can register a company or sole proprietorship in Poland safely and correctly. We draft contracts tailored to your business needs, no matter how complex; we help protect your brand by registering trademarks; and where needed, we assist with the relocation and residence legalisation of owners and employees. We also prepare all the documentation required to run your business and employ staff.

We are committed to an individual approach, legal certainty, and long-term support for the growth of your business.

Online invoices

What data must a VAT invoice contain?

A correct VAT invoice, convenient online issuing and preparation for KSeF.

A correctly issued VAT invoice is one of the most important documents in business activity. At Good Balance we offer convenient online invoice creation in line with the current tax regulations in Poland, including preparation for the mandatory KSeF system.

The list of mandatory elements of a VAT invoice is set out in detail in Art. 106e of the Polish VAT Act.

A well-prepared invoicing system helps you avoid mistakes, speeds up settlements and organises the document flow within the company.

Invoice elements

What data must a VAT invoice contain?

Every invoice should make it possible to clearly identify the document, the parties to the transaction, the subject of the sale and the tax amounts.

Invoice issue date
Sequential invoice number
Seller and buyer details
Addresses of the parties to the transaction
Seller's NIP (Polish tax ID)
Buyer's NIP, if required
For sales to consumers, the invoice generally does not need to contain the buyer's NIP. The exception is simplified invoices up to 450 zł lub 100 euro, where the buyer's NIP remains mandatory.
Checklist

Organised list of VAT invoice elements

The most important data can be divided into four practical groups.

Group 01

Identification information

The invoice should clearly identify the document and the parties to the transaction.

  • Issue date
  • Invoice number
  • Seller and buyer details
  • Addresses
  • NIP numbers

Group 02

Goods or service data

Each line item requires a description, quantity and unit price.

  • Date of goods delivery or service performance
  • Name of the goods or service
  • Quantity and unit of measurement
  • Net unit price
  • Discounts and reductions
Values and markings

Summary of values and special markings

Group 03

Summary of values

The values section gathers the amounts needed to settle the tax.

  • Net sales value
  • VAT rates
  • Tax amounts
  • Net total
  • Amount due

Group 04

Special markings

Depending on the transaction, an invoice may require additional annotations.

  • Split payment mechanism
  • Cash accounting method
  • Margin scheme
  • VAT exemption
The invoice should also indicate the date of goods delivery or service performance, if it differs from the document's issue date.
Details

Further required elements and markings

The invoice should clearly show the subject of the sale, the net values, VAT and the total amount due.

Goods or service

The document should specify:

  • Name of the goods or service
  • Unit of measurement and quantity
  • Net unit price
  • Discounts and reductions, if any

The description should be clear and consistent with the actual sale.

Tax and value

The invoice should include:

  • VAT rate
  • Net sales value
  • VAT tax amount
  • Total amount due

Amounts should be stated in a way that allows the tax to be settled correctly.

Additional annotations

Depending on the transaction, the invoice may contain:

  • 'cash accounting method'
  • 'self-billing'
  • 'reverse charge'
  • 'split payment mechanism'
  • Legal basis for VAT exemption

Special markings depend on the type of sale and the taxpayer's status.

Deadlines

When must a VAT invoice be issued?

— 01 · sale

By the 15th day of the month

An entrepreneur should issue the invoice by the 15th day of the month following the month of sale.

— 02 · customer's request

Within 15 days of the request

When the customer requests an invoice, the document must be issued within the statutory period counted from the request.

— 03 · advance payment

After receiving the payment

In the case of an advance payment, the invoice is issued by the 15th day of the month following receipt of the payment.

Procedures

VAT margin, split payment and cash accounting method

Procedura VAT marża allows you to settle tax only on the margin, that is the difference between the sale price and the purchase price. It applies, among others, to second-hand goods, works of art, antiques and collector's items.

  • 'margin scheme — second-hand goods' or the relevant annotation
  • 'split payment mechanism' on the required transactions
  • 'cash accounting method' for a small taxpayer using this method
Digitalisation

Electronic invoices and the National e-Invoicing System

Invoices may be issued in paper form, in electronic form, e.g. PDF, and as structured invoices in KSeF.

Online invoice issuing
Automatic document submission
Invoice storage for 10 years
Faster VAT refunds
Lower risk of errors
Preparation for the mandatory KSeF
From 2026, KSeF will be rolled out as mandatory in stages: from 1 February 2026 for the largest companies and from 1 April 2026 for the remaining entrepreneurs.
Why us

Why choose Good Balance?

Online invoice issuing in line with regulations
Preparation for KSeF
Invoicing automation
Accounting and tax support
Document security
Simple and intuitive system
Online invoices

Issue invoices faster, more conveniently and in line with regulations

With Good Balance, invoicing becomes organised, secure and ready for KSeF.

At Good Balance we help companies issue invoices online, get ready for KSeF and run settlements safely.

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