Everything you need to know about taxable income certificates

JUDr. Ondřej Preuss, Ph.D.
25. August 2025
8 minutes of reading
8 minutes of reading
Other legal issues

Every employee has encountered this, but few know exactly what they are signing and why. The taxable income certificate is an important document that plays a key role in tax returns, mortgage applications and even registering with the employment office. When do you need to have it, who issues it and why a one-line error can be really expensive?

What is a taxable income certificate and why is it so important?

A taxable earnings certificate is an official document issued by an employer to an employee summarising all their earnings from employment for a certain period (usually a calendar year). This paper, although inconspicuous, carries a lot of weight in the world of taxes, mortgages and official business.

It lets you know how much you earned in a given period, what you paid in taxes (tax, social security and health insurance), whether you signed a tax declaration (the so-called pink form) and what tax credits were applied.

Its main use is when you do your annual tax return or when you file your tax return – especially if you have more than one employer or earn extra income in other ways. Equally, people applying for a loan, mortgage or applying to the Job Centre need it.

In practice, it is often confused with a pay slip or payslip, but in reality it is a completely different document, the form and content of which is precisely defined by legislation.

Who issues the certificate and to whom it is addressed

The employer’s certificate of taxable income is issued by the person who paid your salary for the period in question. Typically, this means your main or secondary employer. If you have had more than one job during the year, you must get a certificate from each of them. Each is only responsible for the accuracy of the information in relation to their own employment.

The recipient is always the employee. This applies even if the employment relationship has ended. Your former employer is still legally obliged to issue you with a certificate if you request one. The obligation arises especially if you do your own taxes, for example because of multiple incomes.

The certificate of taxable employment income only applies to income under Section 6 of the Income Tax Act – for example, wages, salary, remuneration from agreements, income in kind or compensation.

Employers sometimes refuse to issue the certificate or fail to do so in time. In this case, you can contact the tax office or the labour inspectorate – issuing a certificate is an obligation, not a favour.

Are you solving a similar problem?

Is your employer refusing to issue you with an income certificate?

Don’t wait until you lose your tax bonus, mortgage or benefits because of it. We can help with taxable income certificate enforcement, drafting a notice and representation in proceedings.

I need help

  • When you order, you know what you will get and how much it will cost.
  • We handle everything online or in person at one of our 6 offices.
  • We handle 8 out of 10 requests within 2 working days.
  • We have specialists for every field of law.

When is the certificate issued and what if the employer does not issue it?

The deadline for issuing the certificate is not completely free. In practice, the certificate is most often issued in January or February, when employees start dealing with their annual tax return or tax return. If the employee claims a pink slip from the employer and has no other income, the employer will automatically make the clearance. Otherwise, the statement serves as one of the main documents for the tax return.

If the employer refuses to issue the certificate or deliberately prolongs it, this is a breach of duty. In such a situation, the employee has the right to appeal to the tax authority, which may impose a fine on the company. The labour inspectorate can also help.

What does the taxable income certificate contain?

This document is not just a list of earnings. It contains a number of important details that affect the calculation of tax, tax credits and any refunds.

Specifically, it shows your taxable salary (gross income for the period), amounts withheld for social security and health insurance, the amount of income tax payments, whether a tax declaration has been signed (the so-called pink slip), tax credits applied (e.g. for the taxpayer, a child, disability), tax-free parts of the tax base (e.g. gifts, mortgages, pension contributions) and details of withholding tax if it has been applied (e.g. for agreements).

Each item has a precise structure defined by the form issued by the Tax Administration. All amounts must correspond to what you actually received, so it is a good idea to check the document carefully.

The form has several parts:

  • Identification of the employer and employee (company name, ID number, birth number, etc.)
  • Income summary – taxable wages, advances, insurance
  • Details of tax declaration and allowances
  • Other employer’s notes and confirmations

The form can be filled in manually, electronically or by using an electronic form in accounting systems. It is important that it contains the signature of the responsible person and the company’s stamp.

Tip for article

Tip: Who wouldn’t be tempted to learn how not to pay taxes? We’ve written an article to help you do just that.

How do I get the certificate?

Getting a taxable income certificate from your employer is formally easy – just ask for it. The form of the request is not prescribed by law, but it is advisable to do it in writing (by email, via data box or physically).

Don’t underestimate the form of confirmation, as an informal printscreen of your pay slip won’t do. Always keep a copy of the request and the date of submission so that any delays or employer reluctance can be dealt with through the official route.

When do you need a taxable income certificate?

Confirmation of taxable income is not just a requirement. It’s a document you simply can’t do without in many situations in life. Typically, you will need it when:

  • Filing a tax return – for example, if you have more than one employer, a business, renting or income from abroad.
  • Applying for a mortgage or other loan – banks require it as proof of income.
  • Registering with the Job Centre – officials will use it to find out how much income you have before you register.
  • Changing jobs – a new employer often needs information on income and tax credits.

It sounds trivial, but every year hundreds of people get into unnecessary trouble because they put off applying for a certificate. But: your employer doesn’t have a clearly defined deadline by law for when they have to give you the certificate, and if you leave it to the last minute you could miss your tax return, lose your tax rebate or complicate your mortgage.

It’s especially complicated with former employers – if you’re no longer in contact with them, the journey to get a certificate can be lengthy. So the advice is simple: always ask for it as soon as you leave your job.

What if I am self-employed?

The taxable employment income certificate only applies to employees. If you are self-employed, you will not get this document from anyone. Instead, you submit a statement of income and expenses or a tax return with attachments.

If you combine business and employment, you must have a certificate from your employer as well as your own summary as a self-employed person. Withholding tax may apply to agreements and short-term jobs, which are dealt with differently from normal advance payments.

If you have more than one employer during the year, you must get a certificate from each of them. The Inland Revenue expects full details of all income – there is no one ‘summary paper’.

Tip for article

Tip: Learn how to use the online tax portal My Taxes and save time by finding all your forms online in one place. Thanks to modern features, you no longer have to queue at the tax office.

What are the employer’s obligations?

The obligation to issue a certificate comes directly from the Income Tax Act. According to this law, the employer must confirm to the employee the amount of income, withheld deposits and information required for the tax return.

The employer is responsible for the accuracy of the data. If it makes a mistake (e.g. misreporting taxable wages), it is also liable for any consequences – tax withholding, penalties or sanctions. It is therefore essential that the document is issued carefully and accurately.

The employee has the right to check the certificate and request a correction and the employer is obliged to correct any errors. This is not a unilateral declaration, but a document that affects the employee’s legal and tax position.

Summary

A taxable income certificate is an official document issued by an employer to its employee, which serves as a summary of taxable income earned from employment, taxes paid, insurance premiums and tax credits. You will most often need it for your tax return, annual tax return or when the authorities ask you to prove your income – for example, when applying for benefits or a mortgage. Although it is not a document issued automatically, your employer is obliged to issue it on request, even after your employment has ended. The certificate has a structure prescribed by law and is available in the form of a form from the Tax Administration. In many cases, you can also obtain it online. If you want your taxes and communication with the institutions to be uncomplicated, a certificate of taxable income from your employer is the basis without which you cannot do so.

Frequently Asked Questions

What is a taxable income certificate and who issues it?

This is a document issued by the employer that summarises the employee’s income, contributions and tax details for the year. It is used for tax returns and other purposes.

Can I get a taxable income certificate online?

Yes, some companies provide it electronically. However, it must be properly completed, signed and identifiable – otherwise it is not valid.

What if I've worked for more than one employer?

You have to get confirmation from each person separately – each person only confirms their wages and deductions.

What are the most common errors in the confirmation?

Missing signature, wrong amount of taxable wages, incomplete tax credit information or incorrect period.

Share article


Are you solving a similar problem?

Solutions Tailored for You

Our team of experienced attorneys will help you solve any legal issue. Within 24 hours we’ll evaluate your situation and suggest a step-by-step solution, including all costs. The price for this proposal is only CZK 690, and this is refunded to you when you order service from us.

I Need help

Author of the article

JUDr. Ondřej Preuss, Ph.D.

Ondřej is the attorney who came up with the idea of providing legal services online. He's been earning his living through legal services for more than 10 years. He especially likes to help clients who may have given up hope in solving their legal issues at work, for example with real estate transfers or copyright licenses.

Education
  • Law, Ph.D, Pf UK in Prague
  • Law, L’université Nancy-II, Nancy
  • Law, Master’s degree (Mgr.), Pf UK in Prague
  • International Territorial Studies (Bc.), FSV UK in Prague

We can also solve your legal problem

In person and online. Just choose the appropriate service or opt for an independent consultation when you are unsure.

Google reviews
4.9
Facebook reviews
5.0
5 200+ people follow our Facebook
140+ people follow our X account (Twitter)
210+ people follow our LinkedIn
 
We can discuss your problem online and in person

You can find us in 6 cities

Quick contacts

+420 775 420 436
(Mo–Fri: 8—18)
We regularly comment on events and news for the media