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Loonheffingskorting with multiple jobs

Woonbase ·

See why multiple salaries can create payroll mismatches when loonheffingskorting is treated too broadly across jobs.

This page stays at the scenario level: it explains the risk pattern, the payroll logic, and what the calculator can still help you compare.

Calculate your net salary

Use the calculator as the decision tool, then use the page sections below to compare the assumptions behind the estimate.

Calculate your net salaryJump to examples

What it means

Multiple jobs create multiple payroll streams, but tax credits and withholding still meet each other again in the broader yearly picture.

That is why the same payroll discount can feel helpful in one payslip month and still lead to a later correction overall.

How it affects net salary

The calculator can show how one salary stream behaves, but it is most useful here as a comparison tool for the salary side of the situation rather than as a full combined-income answer.

You can compare a main salary, a side-job salary, and a combined reference to see why withholding and final outcome are not always the same thing.

Example scenarios

Two jobs and loonheffingskorting on both

Input situation

Someone receives salary from two employers and wonders why later corrections can appear.

What changes in the calculation

The calculator shows one income stream at a time, so the comparison point is how much of the tax-credit benefit is effectively used through payroll.

What to compare in the calculator

Compare one combined income with one smaller salary estimate and focus on credits, effective rate, and why withholding may differ.

Try this scenario in the calculator

Monthly salary on a 32-hour contract

Input situation

A part-time worker wants to compare the same hourly value across 32-hour and 40-hour contracts.

What changes in the calculation

The tax-credit profile changes because the annual income changes, not just the weekly hours.

What to compare in the calculator

Compare hours per week, gross annual income, and net monthly income for both schedules.

Try this scenario in the calculator

EUR 18 per hour for 32 hours

Input situation

A four-day contract is compared with a full-time schedule at the same hourly rate.

What changes in the calculation

The hourly rate stays constant, but the annual and monthly salary depend on the weekly hours entered.

What to compare in the calculator

Compare 32 hours with 40 hours and focus on monthly net and how credits move with total annual income.

Try this scenario in the calculator

EUR 3,500 gross per month

Input situation

A regular employee compares a EUR 3,500 gross monthly salary with the default payroll settings.

What changes in the calculation

The calculator annualises the monthly salary, applies wage tax, the general tax credit, labour credit, and the normal holiday-allowance logic.

What to compare in the calculator

Compare net per month, total tax, and the effect of switching holiday allowance on or off.

Try this scenario in the calculator

Common mistakes

  • Reading each payslip as if it knows the other job exists.
  • Using only one job's withholding as the reference for the full year.
  • Assuming a side job is too small to influence the combined picture.

FAQ

These questions stay focused on realistic payroll or salary situations, so you can compare them directly with the calculator.

What happens if I apply loonheffingskorting to more than one income?

Payroll can withhold too little tax across the combined incomes, which may lead to a later correction when the full-year tax position is settled. That is why official guidance treats multiple-income situations carefully.

Why is the estimate different from my employer's payslip?

Employers can use payroll settings, pension deductions, Zvw, irregular-income treatment, or other components that are not fully modeled here. The calculator is an illustrative estimate, not a payroll replacement.

Why does the estimate change when I switch from hourly pay to monthly salary?

The calculator always converts the input to an annual basis. When hours per week or the implied annual salary change, the tax and credit picture changes with it.

Why is this page a general explanation instead of personal advice?

Because salary outcomes can depend on employer payroll settings, pension, benefits, reimbursements, and other details that are outside a simple public calculator. The page is meant as a structured explanation and comparison tool.

Calculate your net salary

Use the calculator as the decision tool, then use the page sections below to compare the assumptions behind the estimate.

Calculate your net salaryJump to examples

Related pages

Net salary calculator

Go back to the main calculator and test the same assumptions directly.

Loonheffingskorting explained

Understand loonheffingskorting as a payroll tax discount, why it matters for net salary, and why multiple incomes can complicate it.

Part-time salary Netherlands

Compare part-time salary scenarios by hourly rate and weekly schedule, and see how net pay moves when the contract gets smaller.

Wage tax explained

See how wage tax fits into the Dutch net salary estimate and why credits matter just as much as the tax bands in many salary scenarios.

Net salary at 18 per hour

Use a concrete pay band as the scenario comparison.

Official sources

Use the official pages below to verify the public rules behind the estimate and the example explanations.

Belastingdienst: loonheffingskorting and multiple incomes

Official guidance

Official payroll guidance explaining why applying loonheffingskorting to more than one income stream can lead to under-withholding and later corrections.

Open source

Belastingdienst: apply, change, or stop loonheffingskorting

Official guidance

Official page describing when loonheffingskorting may be applied through payroll and how to change the setting with an employer or benefits payer.

Open source

Belastingdienst: 2026 general tax credit table

Official table

Official 2026 thresholds and phase-out table for the general tax credit used in salary estimates.

Open source
Important: This page gives a general explanation and example scenarios. It is not legal, tax, or financial advice. Rules and amounts may change. Check official sources and your payslip or employer details.
Specific payroll setups, pension arrangements, or employer payroll methods can lead to different results.