Přiložte potvrzení o příjmech.

Přiložte is the imperative form of the verb přiložit. It is used for instructions such as attach, enclose, or include.

In administrative Czech, this kind of imperative is very common on forms, checklists, and official websites. It does not usually sound harsh; it simply gives a standard instruction.

It can be both:

• 2nd person plural: when speaking to more than one person
• formal singular: when addressing one person politely
• formal plural: when addressing more than one person politely

In official instructions like this, Czech often uses this form without worrying about a specific individual. It is basically the standard formal instruction form.

It comes from přiložit, which is a perfective verb.

That matters because Czech often uses a perfective imperative when telling someone to do a complete action once:

• přiložit = to attach / enclose / add
• Přiložte = attach / enclose it

A more imperfective counterpart would be přikládat, but that would not be the normal choice here. In a one-time instruction on a form, přiložit is the natural verb.

Here potvrzení is in the accusative singular, because it is the direct object of Přiložte.

The reason it looks unchanged is that potvrzení is a neuter noun of a type where the nominative and accusative singular are the same.

So:

• nominative: potvrzení
• accusative: potvrzení

That is completely normal.

Because the preposition o here means about/concerning, and with that meaning it requires the locative case.

The noun is příjem. In the locative plural, it becomes příjmech.

So:

• o + locative
• příjmech = locative plural

That is why o příjmech is correct.

In this bureaucratic expression, Czech very often uses the plural: potvrzení o příjmech.

This is similar to English proof of earnings or income statements, where the idea is your income as a whole, often from possibly multiple sources.

The singular potvrzení o příjmu can also exist in some contexts, but potvrzení o příjmech is a very common and standard official phrase.

Yes, very much so. It is a common official collocation meaning something like proof/certificate of income.

Czech administrative language often uses established noun phrases like this, and learners benefit from memorizing them as whole chunks rather than building them from scratch every time.

Because Czech has no articles.

So where English says:

• attach the certificate
• attach a certificate

Czech simply says:

• Přiložte potvrzení

Whether it means a, the, or something more general depends on the context.

Yes. Czech word order is more flexible than English.

For example, you could also say:

• Potvrzení o příjmech přiložte.

But the original order:

• Přiložte potvrzení o příjmech.

is the most neutral and natural for an instruction. It starts with the action, which is very common in forms and official directions.

No. In English, an imperative can sometimes sound abrupt, but in Czech official language it is completely normal.

On forms, websites, and office instructions, the imperative often functions as a neutral instruction rather than a personal command. So Přiložte potvrzení o příjmech sounds standard and appropriate, not impolite.

A rough pronunciation is:

• Přiložte ≈ przhi-loash-tye

The hardest sound is ř, which is a special Czech sound somewhat like a mix of r and zh (the sound in measure).

You do not need to master it immediately, but be aware that:

• ř is distinct from r
• ž sounds like the s in measure
• ě after t makes the end sound like tye

So the ending -žte is roughly -shte / -zhte, depending on how you approximate it, but the real Czech sound is more precise than English spelling can show.