ROAS and break-even ROAS calculators for ad budgets and e-commerce.
Ad-spend metrics for online sellers: return on ad spend, break-even ROAS and maximum cost per acquisition, with Dutch margins and 21% BTW in mind.
Use the ROAS Calculator to measure a campaign and the Break-Even ROAS Calculator to know the number you have to beat before ads are profitable.
It depends on your margin. A ROAS of 4 is profitable at a 30% margin, but not at 20%.
Use revenue excluding BTW for a fair comparison.
No. ROAS ignores costs other than ad spend.
Dutch net salary, 30% ruling, ZZP, holiday allowance, VAT (BTW), box 3, bijtelling and more — built on 2026 Belastingdienst rates.
Dutch mortgage, maximum mortgage, repayment schedules, mortgage interest relief, rent vs buy and loan calculators.
Financial lease, private lease, operational lease and tyre-size calculators for drivers and businesses in the Netherlands.
Euro converters with live ECB-based rates (USD, GBP, IDR, DKK, NOK) plus forex lot size and compounding tools.
Compound interest, investment return, dividend and long-term investing calculators with Dutch box 3 tax.
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FOV and Minecraft Nether portal coordinate calculators.
Gematria, numerology, Chinese zodiac, angel number, rising sign and moon sign calculators for fun and reflection.
Guides to the calculator (cost estimator) job in Dutch construction: duties, salary and vacancies.
