
Invoicing as a Freelancer: Essential Invoice Components
As a freelancer, correct invoicing is essential for a healthy business. But what exactly needs to be on an invoice? This guide walks you through all the mandatory components and gives you practical tips to avoid mistakes.
Why is correct invoicing important for freelancers?
As a freelancer, you are responsible for your own financial administration, and correct invoicing is a crucial part of that. A correct invoice ensures that you get paid on time, that your VAT return is correct, and that you don't run into problems with the tax authorities.
What mandatory components must a freelance invoice contain?
An invoice must meet certain requirements to be valid for the tax authorities. The following components are mandatory: * Invoice date: The date the invoice was issued. * Invoice number: A unique, sequential number. * Your details: Your full name, address, and VAT number. * Customer details: The name and address of your customer. * Description of goods or services provided: A clear description of what you have delivered. * Date of delivery or service: The date on which the goods or services were delivered, or the period in which the services were provided. * Amount excluding VAT: The amount you charge without VAT. * VAT rate: The VAT rate that applies (usually 21%, sometimes 9% or 0%). * VAT amount: The amount of VAT you charge. * Total amount including VAT: The total amount the customer must pay.

What about the small business scheme (KOR) and invoicing?
If you use the small business scheme (KOR), you do not have to charge and pay VAT. You must clearly state this on your invoice. For example, state: 'Small business scheme (KOR) applies, no VAT charged'. Please note: the KOR has certain turnover limits. If you exceed these, you must charge VAT.
What are the consequences of an incomplete invoice?
An incomplete invoice can have unpleasant consequences. The tax authorities can refuse VAT deduction from your customer, which may cause your customer to object. The tax authorities can also impose corrections themselves, which can lead to additional assessments and fines. Always ensure that your invoices are complete and correct!

How does invoicing abroad work?
Invoicing abroad requires extra attention. Different rules apply within the EU than outside the EU. For deliveries within the EU, you must check your customer's VAT number and possibly reverse charge the VAT. For deliveries outside the EU, you usually invoice without VAT. Consult the tax authorities' website or seek advice from a specialist to ensure you handle it correctly.
What payment term should I use?
There is no legally established payment term. You can determine which payment term you use yourself. A payment term of 14 or 30 days is common. Clearly state the payment term on your invoice. It is also wise to include a provision in your general terms and conditions regarding collection costs and interest in case of late payment.
How can I easily create my invoice?
There are several ways to simplify invoicing. You can use an invoicing program or an online template. Many accounting packages also offer the possibility to create and send invoices. This automates the process and reduces the chance of errors.
Frequently Asked Questions
What is the difference between an invoice and a proforma invoice?
How long should I keep my invoices?
What should I do if a customer does not pay my invoice?
Sources & References
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