A Quantitative Developer (C++ / Python) earning the median salary of €125K in the Netherlands takes home approximately € 73.193/year (€ 6.099/month) after Box 1 Income Tax, using 2026 rates.
Quantitative Developer (C++ / Python) take-home pay across the salary range
Standard employee, no 30% ruling. 2026 rates.
Entry (P25)
€ 120.000
gross/year
Take-home
€ 70.668
€ 5.889/month
Total tax
€ 49.332
41.1% effective rate
Breakdown
Box 1 Income Tax
Median
€ 125.000
gross/year
Take-home
€ 73.193
€ 6.099/month
Total tax
€ 51.807
41.4% effective rate
Breakdown
Box 1 Income Tax
Senior (P75)
€ 133.000
gross/year
Take-home
€ 77.233
€ 6.436/month
Total tax
€ 55.767
41.9% effective rate
Breakdown
Box 1 Income Tax
Adjust for your actual salary
The table above uses the Quantitative Developer (C++ / Python) median. Enter your own gross salary below for a precise figure.
2026 Box 1 tax year
35.75% up to €38,883. 37.56% up to €78,426. 49.50% above. The 30% ruling excludes part of your salary from Box 1 entirely.
Which year of your 5-year ruling term?
The 2024 plan to step the ruling down to 20% then 10% was reversed — for 2026 it stays a flat 30% tax-free for the full 5-year term, whichever year you're in.
Common salaries:
With 30% ruling
€91,755/yr
€7,646/month
Without ruling (standard Box 1)
€73,193/yr
€6,099/month
Annual take-home pay (with 30% ruling)
€91,755
Per month
€7,646
Per week
€1,765
Effective tax rate
26.6%
Tax-free ruling allowance
€37,500
How your €125,000 is split
€91,755
73.4%
€33,245
26.6%
Don't forget vakantiegeld (holiday allowance)
Dutch employers must pay at least 8% of your gross salary as holiday allowance — usually €10,000/year on this salary, paid as a lump sum around May. Many job ads quote gross pay excluding this, so check whether the figure you were offered already includes it.
| Gross salary | €125,000 |
| 30% ruling tax-free allowance | €37,500 |
| Taxable income (Box 1) | €87,500 |
| Box 1 income tax | -€33,245 |
| Net take-home (annual) | €91,755 |
Calculations use 2026 Box 1 rates (35.75% / 37.56% / 49.50%) and assume standard working-age employment. The 30% ruling is modelled as a flat 30% tax-free allowance for the full 5-year term (the previously legislated 30-20-10 step-down was reversed for 2026); it drops to a flat 27% from 2027 onward, which this calculator does not model. Eligibility for the ruling (recruitment from abroad, specific-expertise salary threshold, prior residency distance test) is not verified by this tool. Does not account for the general tax credit, employment tax credit, health insurance premium (ZVW), pension contributions, or Box 2/3 income. For precise advice consult a Dutch tax adviser or the Belastingdienst.
A Quantitative Developer (C++ / Python) earning the median salary of €125K in the Netherlands takes home approximately € 73.193 per year (€ 6.099 per month) after Box 1 Income Tax, using 2026 rates.
On a median Quantitative Developer (C++ / Python) salary of €125K, the effective deduction rate (Box 1 Income Tax) is 41.4%, leaving € 73.193 as take-home pay.
A senior Quantitative Developer (C++ / Python) earning €133K (P75 of the salary range) takes home approximately € 77.233 per year (€ 6.436 per month) after Box 1 Income Tax, with an effective rate of 41.9%.
A junior Quantitative Developer (C++ / Python) earning €120K (P25 of the salary range) takes home approximately € 70.668 per year (€ 5.889 per month) after Box 1 Income Tax, with an effective rate of 41.1%.
Quantitative Developer (C++ / Python) Salary Benchmarks
Full range, city comparisons, seniority bands
Compare a job offer
See how pay, benefits, and costs change the picture
Quantitative Developer (C++ / Python) contractor rates
Compare permanent pay with current contract market rates
Remote vs Hybrid
Is the commute worth it?