Create Invoices - Professional and Easy
Create professional invoices in minutes with Factuur Simpel. From automatic tax calculations to full legal compliance.
Professional invoices
Create invoices with your own logo and branding that impress your customers.
Automatic calculations
Tax is calculated automatically. No more errors in your invoices.
Legally compliant
All invoices automatically meet tax authority requirements.
Get paid faster
With payment links, your invoices are paid 35% faster on average.
What must be on an invoice?
A correct invoice is essential - not just to get paid, but also for your tax administration. Tax authorities set clear requirements.
Your business information
- Full business name (as registered)
- Business address
- Tax identification number (required)
- VAT number (if applicable)
Customer information
- Name of the business or individual
- Full address
- VAT number (for B2B)
Invoice details
- Unique invoice number (sequential numbering)
- Invoice date
- Date of delivery or service
- Payment terms
Amounts
- Clear description of products or services
- Price per unit (excluding tax)
- Applicable tax rate and tax amount
- Total amount including tax
Tax rates on your invoice
Tax rates vary by country and product type. It's important to apply the correct rate.
| Tax rate | Applies to |
|---|---|
| 21% | Standard rate for most products and services (consulting, design, IT, marketing, photography) |
| 0% | International transactions, deliveries within EU to other businesses, export outside EU |
Payment terms
The standard payment term is 30 days. For business customers, this can be up to 60 days contractually.
| Term | Meaning |
|---|---|
| Due upon receipt | Payment expected upon delivery |
| 14 days | Common for small amounts and known customers |
| 30 days | Standard payment term |
| 60 days | Maximum for business customers (B2B) |
Tips for faster payment
Common invoicing mistakes
Avoid problems with tax authorities and ensure your customers pay quickly.
Missing tax ID
Your tax identification number is legally required. Without it, your invoice is not valid.
Incorrect tax calculation
Especially with mixed rates, mistakes happen. Let software do the calculation.
Duplicate invoice numbers
Each invoice number can only occur once. Use automatic numbering.
Unclear description
Clearly state what you delivered. This is required by tax authorities.
No payment terms
Always state when payment is due. Prevents disputes later.
Modifying sent invoices
A sent invoice cannot be modified. Create a credit note instead.
Why choose Factuur Simpel?
Everything you need for professional invoicing, starting at €9.99 per month.
30 days free trial - no credit card required
Frequently asked questions
Frequently asked questions about creating invoices
Do I need to include my tax ID on an invoice?
Yes, your tax identification number is legally required on every invoice. Without it, your invoices may not be valid for tax purposes.
How long must I keep invoices?
Invoices and related records must be kept for at least 7 years. For real estate, this may be 10 years.
Can I modify a sent invoice?
No, once an invoice is sent, it cannot be modified. If there's an error, you must create a credit note to correct the original invoice.
What's the difference between an invoice and a quote?
A quote is a price proposal, an invoice is a payment request. A quote only becomes an invoice after the customer agrees and you've delivered the work.
How much does Factuur Simpel cost?
The Budget subscription costs €9.99 per month (including tax). The Complete subscription with all features including Peppol costs €17.99 per month.
Is there a free version?
You can try Factuur Simpel for 30 days free with access to all features. After the trial period, you choose whether to subscribe.
Ready to get started?
Create your first invoice within 5 minutes. No credit card required.
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