DEAutomating payroll
Payroll calculations run automatically from your systems: the Lohnica API calculates in real time, corrects retroactive changes on its own and returns results as JSON or PDF.
Between recorded working time and a finished payroll result, many companies rely on a chain of exports, spreadsheets and emails. Numbers can slip at every handover – and because results come back days later, mistakes often surface only in the following month.
An API removes that chain: your systems hand over the data directly, the calculation answers in milliseconds, and the result lands exactly where you process it – as JSON in your software or as a PDF for filing.
Two ways to run the same month
Without automation
- Exports and spreadsheets as intermediate steps
- Every handover is a potential source of errors
- Results come back days later
- Mistakes often surface only in the following month
With the Lohnica API
- Your systems hand over the data directly via API
- Answers in milliseconds, repeatable as often as needed
- Lohnica corrects retroactive changes automatically
- Results land directly in your processes
Send, calculate, process
Send data
Master and transaction data arrive via REST call from your time tracking, HR software or in-house tool – in any order and, thanks to historisation, retroactively too.
Calculate in real time
Income tax, social security, bonuses and employer costs – every calculation takes milliseconds. After every change you can fetch a fresh trial payroll run right away and see the effect without waiting for the live run.
Process the result
Results come back structured as JSON – for your UI, your accounting, or as a PDF payslip for filing.
Trial payroll runs today – live operation with notifications from 2027
Today: trial and interim payroll runs
Complete payroll runs already happen automatically from your systems – as trial runs with PDF, repeatable as often as you like. That automates review, planning and payroll preparation right now.
From 2027: live operation with notifications
After the completion of the ITSG system examination, planned for 2027, these become live payroll runs including electronic notifications – via API or in the self-service payroll software.
Frequently asked questions
By letting transaction data – working hours, bonuses, one-off payments – flow directly from your systems into the calculation instead of retyping it every month. With the Lohnica API that is one REST call.
Let’s automate your payroll run
Tell us where your data lives today – we will show you the shortest path to automated payroll.