Common situations

Connecting HR to a payroll provider, accounting firm or YouServe

With outsourced payroll the integration delivers HR changes from, for example, Dayforce, Oracle HCM or SAP SuccessFactors to the payroll provider's Nmbrs, Loket or YouServe environment, with access to your administration only. Collective agreement, payroll tax credit, pension and the payroll run itself stay with the provider, and the integration does not overwrite those settings.

Last updated: 9 November 2026

Discuss your integration All about Payroll integration

What it is

Many organisations do not run payroll themselves. A payroll provider, accounting firm or the Visma YouServe payroll service calculates salary, in its own Nmbrs, Loket or YouServe environment with several clients. The provider works with a fixed cut-off date per period.

Without an integration every new hire arrives by email or spreadsheet, and the provider has to work out per client what changed since the last period. A change that arrives after the cut-off slips by a month.

How the integration handles it

The provider gives the integration its own login at employer level. The provider's other clients stay out of view; a general provider login does not work for this.
The integration delivers HR changes and leaves collective agreement, payroll tax credit and pension in payroll as they are.
Before the cut-off KoppelHet compares the HR system with payroll once more, so a missed notification is still fixed in the same run.
A new hire who starts in a few weeks is in payroll straight away with the start date, so the provider can prepare the first payslip.
On a departure KoppelHet delivers the last working day and the reason. The provider calculates final pay with holiday allowance and leave.
When a payroll provider serves several end clients with their own HR environment, each end client gets its own credentials, its own Nmbrs company and its own integration on the platform.
Payslips can go back to the HR system, if it accepts documents per employee.

Edge cases we handle

Visma YouServe processes changes up to a fixed cut-off per period. Which entry point the environment has, direct or through a workflow, we agree with Visma at the start.
YouServe only creates an employee with a collective agreement. KoppelHet derives it from the Dutch entity, department or a custom field in HR.
For a new end client of a payroll provider the work is in translating jobs, departments and pay components, and in access to that client's HR environment.
A bureau that manages Loket grants access through a named user. If that user lapses, the platform reports that the integration has stopped.

What KoppelHet does

KoppelHet arranges access with the provider, records per client what the integration does and does not write, and schedules the check before the provider's cut-off. After go-live we manage the integration and spot an error before the provider does. For a payroll provider with several end clients the base is the same and per end client we only set up the translation and access.

Common integrations

Dayforce → Nmbrs

Dayforce to Nmbrs integration: Dutch payroll per end client

Oracle HCM Cloud → Nmbrs

Oracle HCM to Nmbrs integration: the Dutch entity in payroll automatically

Sympa → Nmbrs

Sympa to Nmbrs integration: HR changes from Sympa to Dutch payroll

Deel → Loket

Deel to Loket integration: employees of your own Dutch BV from Deel in Loket

Workday → Visma YouServe

Workday to Visma YouServe integration: Workday changes straight to the payroll service

SAP SuccessFactors → Visma YouServe

SuccessFactors to YouServe integration: changes on time for Visma's payroll service

Workday → SD Worx

Workday to SD Worx integration: changes per pay group to SD Worx, payslips back in Workday

Workday → DATEV

Workday to DATEV integration: German changes from Workday ready for the tax adviser

Workday → ADP iHCM

Workday to ADP iHCM integration: salary, bonuses and departures in the right ADP period

Customer case

Tentoo

Payrolling

Tentoo runs Dutch payroll for international employers that use Dayforce as their HR system. The integration brings employees, pay components and hours from Dayforce to Nmbrs, and returns payroll results and payslips from Nmbrs to Dayforce.

Read the customer story

Frequently asked questions

Does the integration see the provider's other clients?

No. The provider gives the integration access to your employer or company only. For a payroll provider with end clients each end client has its own integration.

What stays with the provider?

Collective agreement, payroll tax credit, pension, the payroll run and final pay. The integration delivers the HR changes.

How quickly is a payroll provider's new end client connected?

The base is the same for every end client. What takes time is translating jobs, departments and pay components and arranging access to that client's HR environment.