DK and Payday IntegrationYour accounting, unchanged
You don't need to change accounting systems to use Rektor. Connect DK or Payday once, and from then on, units, prices, and invoices sync automatically.
Offers, projects, and time tracking live in Rektor. Invoices go to accounting with due dates and bank claims, and once paid, you can see it in Rektor.

What you get
- Import Units from DK with price and cost price, from Payday with price, or from Excel
- Pull employees from DK so nobody has to enter them twice
- Payment statuses and credit notes from DK update daily, or instantly with a single click
- Also works without an accounting system: you create the units in Rektor and issue the invoices from there
How it works
Connected in one place
Connect DK+ or Payday once in settings and Rektor instantly imports products, employees, and past invoices.
Product catalog becomes units
Products in your accounting system become units in Rektor that you can add directly to offers. You can see which products are already linked to units and which are new.
- From DK, products are imported with item numbers, prices, VAT, units of measurement, and cost prices.
- Fetches products from Payday with sales prices excluding VAT. You can add costs to units or record them directly to the project from a supplier invoice.
Employees and past invoices
The integration fetches more than just products. The staff list makes it easy to invite your team, and past invoices provide context on customers.
- You select staff from DK, choose a role, and Rektor sends them an email invite.
- Past invoices from DK and Payday are imported along with customers, keeping each customer's history intact.
Supplier invoices to projects
Purchases booked in DK or Payday sync into Rektor. You assign the materials to the right project, where they count as costs and the customer is billed with a markup.
- Rektor suggests the project and which line items are materials for the job, and you simply confirm.
Receipts straight to accounting
Upload a receipt from a supplier or have an employee take a photo of it in the app. Rektor reads the receipt, adds it to the project, and sends it to DK or Payday as a draft, so the bookkeeper doesn't have to enter it.
- In DK, the receipt itself is included as an attachment.
- A receipt from an employee doesn't go to accounting until you have reviewed and approved it.
The invoice goes to accounting
Select lines and quantities and send the invoice to DK or Payday with one click, including a bank claim to the customer if you wish.
- Connect a unit to a product in DK or create a new product in DK directly from Rektor. The connection is saved on the unit, so you only have to do this once.
Status syncs back
Once a day, early in the morning, Rektor checks all invoices sent to accounting. You can also fetch the status immediately, on the invoice itself or on the project.
- Credit an invoice in DK or Payday directly from the invoice in Rektor and download the credit note as a PDF. The quantity is then returned to the project so it can be billed again.
- You receive a notification when DK or Payday records a payment.
- If the connection to DK or Payday stops working, you'll receive a notification in Rektor and an email, so invoices don't stop going to accounting without you knowing.
Even without an integration
You don't need an accounting integration to use Rektor. Offers, projects, Time Tracking, and invoice overviews work just the same.
- Create units directly in Rektor or import them from an Excel or Numbers spreadsheet using a template downloaded from Rektor.

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