Invoice Quickly, Easily, and Free

Create an invoice by filling in the details for you and your client: IČO (business registration number), bank account number, and address. The search feature enables you to search by IČO  to quickly autofill information for you and your client. Check all required fields: invoice number, date of issue, due date, service / product description, rate, quantity / hours, and total amount. You can also select the currency, include an exchange rate if applicable, and generate invoices in Slovak, English, or other languages.

Use the “send invoice” button to directly issue an invoice to a client. Alternatively, you can preview the invoice first, and use the ‘download’ button to receive your invoice in PDF format completely for free. Attach your invoice to an email to send to clients, and save for your own records.

By default, the invoice generator creates an invoice in English language. To generate an invoice in another language, use the language toggle in the top-right part of the application. Here, you can select multiple languages to generate invoices in Slovak, or in any other supported foreign language.

By default, the invoice generator will create your invoices in EUR. To generate an invoice in another currency, use the currency toggle in the top-right part of the application. Here, you can select multiple currencies for your Slovak invoicing.

The IČO in Slovakia is a business registration number. Fill in your business registration number and that of your client to autofill invoice details.

The variable symbol is for client record-keeping only, serving as a reference number. Variable symbols for example can be the exact same as your invoice number.

There is no specific format your invoice numbering should follow. However, note that each invoice number must be in consecutive order. For a basic example, your first invoice might be “001,” with “002,” “003,” and so on. You might also want to include the year along with the number for better accounting, such as: “2023001,” “2023002,” “2023003,” etc.

The due date is the absolute latest date by which you expect payment. By default in the invoice generator, the due date is 7 days ahead of the date of issue. You can also manually input the due date if it is different from the default setting.

To invoice EU-registered business clients outside of Slovakia, you must issue an invoice according to VAT requirements. This means that EU reverse charges can apply. However, you still invoice without VAT, while customers within the EU can fulfill payment terms without VAT. This information you can include in the invoice, declaring the reverse charge for both the subscriber and Slovakia’s tax authorities. In the invoice, it must be clear that the service or good exchange is under EU reverse VAT charges. For example, the invoice may include: “0% VAT EU Reverse Charge.”

No. An invoice in PDF format is completely sufficient. It carries all of the information Slovak tax authorities need to identify all parties in a transaction.