When must I issue an invoice?

Within 15 days of the taxable supply date (Art. 71(1) EU VAT Directive / § 71(1) Slovak VAT Act).

What if the client does not pay?

After the due date you are entitled to statutory late-payment interest. You can enforce the invoice via a payment order or court proceedings.

Is an electronic invoice as valid as a paper one?

Yes. An electronic invoice is fully valid, provided its authenticity and integrity are ensured throughout the 10-year archiving obligation.

What is a variable symbol?

A variable symbol is a numeric payment identifier that allows the recipient to match a payment to a specific invoice. We recommend using the invoice number as the variable symbol.

Coaches & trainers Invoice

Invoice for Coaches & trainers

Coaching is a high-value service and your invoice should reflect that — clearly, professionally, and with precise payment terms. A poorly issued invoice undermines the impression of quality work and delays payment. zipzipdoc generates a correctly formatted invoice in seconds so you can stay focused on your clients.

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Coaches & trainers

A coach or trainer works with confidential information and emotionally sensitive topics. A professional contract with a clear code of ethics, cancellation terms and confidentiality protects both you and the client. zipzipdoc prepares these documents in minutes.

Invoice

Create an invoice including VAT, company ID, taxable event date, due date and variable symbol. Send it directly to the client.

When to use a Invoice

After delivering goods or providing a service
For monthly billing of recurring services
When the client needs a tax document for VAT deduction
For advance payment before work begins

What you get

VAT and tax fields
Logo and branding
Due date and penalties
Send by email

Benefits for Coaches & trainers

Bulk signing for groups
Ethics and confidentiality covered
GDPR-friendly consents

FAQ

Questions about Invoice

Supplier and buyer IDs, invoice date, taxable supply date, invoice number, description of supply, VAT base, VAT rate and amount, total amount payable.

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