Invoicing & accounting

Billdu accounting with file import

Import your Billdu data into KudTax as a CSV or XLSX file. Review the imported amounts and references and prepare them for reconciliation and accounting.

Billdu is aimed at sole traders and very small businesses — often small-business filers under § 19 UStG who prepare a cash-basis income statement. Different rules apply there: no VAT on the invoice, no input tax deduction, and what governs is the date of payment rather than the date of the invoice.

KudTax

How Billdu works with KudTax

  1. 01

    Export your Billdu file

    Download the appropriate export from Billdu. The supported file and fields depend on the import format.

  2. 02

    Upload the file to KudTax

    Upload the export file to KudTax. The Billdu integration processes the data contained in the file.

  3. 03

    Review the import and matches

    Check the imported amounts, dates and references. Add missing documents and review unresolved matches before continuing.

  4. 04

    Prepare your accounting data

    Prepare the imported data for your accounting workflow. Review the posting rules and export file with your accountant.

What KudTax reads from Billdu

Where the export lives
Billdu → Documents → Invoices → Export, or the accounting export for the period
What the portal calls the file
Invoice export
Formats
CSV / XLSX

Line-item types recognised

  • Outgoing invoices
  • Payments received per invoice
  • Expenses and receipts
  • Credit notes
  • Open items

What to watch for with Billdu

Cash-basis accounting counts the payment date

Cash-basis accounting records when money moves, not when the invoice was written. An invoice issued in December and paid in January belongs to the new year. Booking by invoice date shifts profit across the year end.

The small-business threshold runs alongside

Cross the turnover threshold and standard taxation applies from the following year, with VAT shown on every invoice. Without watching the running annual total this surfaces only once the new year's invoices have already gone out without tax.

Why connect Billdu with KudTax

Zero manual data entry

Eliminates spreadsheet copying and manual posting errors for tax firms and accounting teams.

Mapped chart of accounts

Fully customizable G/L accounts, contra accounts and tax keys matching SKR03 or SKR04.

Document references for review

Includes document references for review. This does not guarantee automatic document links or legal compliance.

Review before further processing

Review the prepared data and, where needed, confirm account assignments and document links with your accountant.

Billdu integration – FAQ

Automate your Billdu accounting today

Explore the workflow in the product tour and check whether your Billdu export matches the supported import format before getting started.