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.

Accountants & tax advisors Invoice

Invoice for Accountants & tax advisors

Ironically, accountants sometimes neglect their own invoices — issuing them late, without the correct required details, or without tracking due dates. A professional invoice with a clearly defined service, correct VAT rate, and payment deadline gives the client everything they need to pay quickly. zipzipdoc generates it in seconds.

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Accountants & tax advisors

An accountant or tax advisor needs an engagement letter, power of attorney and GDPR consent from every client. These documents are traditionally handled on paper. zipzipdoc digitalises the whole process — clients sign online before the first meeting.

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 Accountants & tax advisors

Online signing of engagement letters and powers of attorney
Automatic archive for audit
Bulk sending to clients

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.

How does zipzipdoc compare to alternatives?

See detailed comparisons with popular e-signature tools.

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