Setting Up Invoice Numbers

How do you set up invoice numbers for a new financial year in Easyflor?

What are invoice numbers?

Every invoice you send gets a unique number. This number often consists of the year and a sequence number (for example D2023000105). You can set how these numbers look and where they start.

Why do you need to set up invoice numbers?

  • New financial year: Every year you often want to start numbering again
  • Overview: You can immediately see in which year an invoice was created
  • Administration: Your accountant needs a clear structure
  • Legal requirement: Invoices must have unique, consecutive numbers
  • Preventing errors: You prevent duplicate invoice numbers

How does an invoice number work?

An invoice number consists of different parts:

Example: D2023000105

  • D = This is a letter that Easyflor automatically adds (D = Debit invoice, C = Credit invoice)
  • 2023 = The prefix number (usually the year)
  • 000105 = The sequence number (with zeros in front to make the right length)

How do you set up invoice numbers?

Step 1: Go to administration

  1. Click on "Organisation"
  2. Click on "Administration"
  3. Select the administration for which you want to set invoice numbers

Step 2: Go to invoice numbers

  1. Click on "General"
  2. Click on "Invoice numbers"

Step 3: Fill in the settings

You need to fill in four things:

1. Date from

  • This is the date when these invoice numbers take effect
  • Usually January 1st of the new year

Example:

  • For the year 2025: enter 1-1-2025

2. Prefix number

  • This is always at the beginning of your invoice number
  • Usually you use the year

Example:

  • For 2025: enter 2025
  • For 2026: enter 2026

3. Length

  • This determines how many digits come after the prefix number
  • Including the zeros at the beginning

Example:

  • Length 6 means: 6 digits after the prefix number
  • Number 105 becomes: 000105 (with three zeros in front)
  • Number 12345 becomes: 012345 (with one zero in front)

4. Number

  • This is the starting number of your invoices
  • Usually you start at 1, but you can also start at a higher number

Example:

  • If you want to continue at invoice 105: enter 105
  • If you want to start completely fresh: enter 1

Step 4: Save

Click "Save" and your settings are active!


Complete example

Suppose you want the following:

  • The new year 2025 starts on January 1st
  • Invoice numbers should start with 2025
  • You want 6 digits after the year
  • You start at number 1

Then you fill in:

  • Date from: 1-1-2025
  • Prefix number: 2025
  • Length: 6
  • Number: 1

Result:

  • First invoice becomes: D2025000001
  • Second invoice becomes: D2025000002
  • Hundredth invoice becomes: D2025000100
  • Thousandth invoice becomes: D2025001000


Example from the manual

Settings:

  • Date from: 1-1-2023
  • Prefix number: 2023
  • Length: 6
  • Number: 105

Result:

  • First debit invoice on 1-1-2023 becomes: D2023000105

Important tips

Tip 1: Plan ahead

  • Set up the invoice numbers for a new year before the year starts
  • This prevents problems on the first working day of the year

Tip 2: Choose the length wisely

  • Length 6 is usually sufficient (up to 999,999 invoices per year)
  • Too short? Then you can't fit all invoices
  • Too long? Then you get unnecessarily long numbers

Tip 3: Don't always start at 1

  • Some companies start at 100 or 1000
  • This gives a more professional impression (it looks like you've already sent more invoices)

Tip 4: Always test it

  • Create a test invoice to check if the number looks right
  • This prevents surprises

Common mistakes

Mistake 1: Wrong date

  • If you set "Date from" to 1-1-2025, but it's still 2024, Easyflor still uses the old numbers
  • Make sure the date is correct!

Mistake 2: Length too short

  • With length 4 you can only go up to 9999 invoices per year
  • Expecting more invoices? Choose length 5 or 6

Mistake 3: Forgetting to adjust the starting number

  • If you ended at 500 last year and want to continue, you need to enter 501
  • Want to start fresh? Then enter 1

Summary: Quick checklist

For the new financial year:

  • Go to OrganisationAdministration → [Your administration]
  • Click on Invoice numbers
  • Fill in Date from (for example 1-1-2025)
  • Fill in Prefix number (for example 2025)
  • Choose Length (usually 6)
  • Choose Number where you want to start (usually 1)
  • Click on Save
  • Test with a trial invoice!

Now you're ready for the new year! 🎉

Heeft u vragen of heeft u hulp nodig? Neem dan gerust contact met ons op via telefoonnummer +31 (0)71 30 20 310 of stuur een e-mail naar support@easyflor.nl.