Post Smart. Tax Safe. Pay Fair.

Taxonary helps all kind of companies, staffing agencies, and employees calculate salaries, taxes, allowances, and project costs for posted workers and cross-border work in the EU.

Blue Collar Worker with Taxonary Logo

Who is a posted worker?

A posted worker is someone who temporarily works in another country while staying employed by their home-country company.

Posted worker
Supported Flags

Which Problem Do We Solve?

Calculating salaries and costs for posted workers in the EU is complex and time-consuming. Different tax rules, allowances, and hidden costs can lead to mistakes, delays, and fines.

Taxonary makes this easy by giving fast, accurate, and contract-ready calculations based on real data. It adjusts to each case - so you can get clear answers for any project, client, or country. This helps you explain your pricing, make quicker decisions, and reduce financial risks.

The High Price of Getting It Wrong

Getting tax calculations wrong in EU isn't just a minor error — it can lead to audits, fines, back payments, and even bans from future contracts.

Local tax authorities in countries like Norway, Sweden, and Denmark are strict, and non-compliance is treated seriously. A single mistake in calculating employer or employee obligations can put your project, reputation, and finances at risk. When every detail matters, guesswork isn't an option.

The High Price of Getting Taxes Wrong

Trusted by Companies Across Europe

Taxonary helps businesses manage posted worker taxation and compliance across the EU.

4.8 / 5

We decided to start projects in Sweden and Spain but had no idea what price to offer the client. We used this calculator and managed to send out our proposal just in time. In the end, we signed the contract — and actual costs turned out to be 4% lower than estimated! So yes, there's a slight inaccuracy, but we definitely didn’t mind!

Maria Rodriguez's testimonial for Taxonary
Maria Rodriguez
HR Director, TechGlobal Solutions

Taxonary has transformed how we manage our international workforce. The platform's automated tax calculations and compliance features have streamlined our operations across the EU. It's been invaluable for ensuring accurate tax burden calculations and maintaining proper documentation for our posted workers.

Victor Chaykin's testimonial for Taxonary
Victor Chaykin
Founder & CEO, VLAVI

A super helpful tool for calculating salaries from net to gross, including taxes in both countries for posted workers. It also covers all extra project costs and lets you set a profit margin to get the client price. Saves a lot of time! The only downside is that the interface takes a bit to get used to.

Hans Weber's testimonial for Taxonary
Hans Weber
Finance Manager, Deutsche Engineering GmbH

For the last 2 years we saw an opportunity to start working in Sweden, but never tried due to the lack of understanding how to proceed with working in foreign country. Many offers were refused from our side. Than we saw an advertisement of Taxonary and tried just to check what we can get. After deeper work with calculator we understood how we can start working in Sweden and nowadays we already think about expansion to Norway. 

Sophie Laurent's testimonial for Taxonary
Sophie Laurent
Tax Compliance Officer, BuildCorp France

Before Taxonary we used classic consultancy services and paid about 2 000 euro per month. Now we use Taxonary and get the same results. There is still room for improvement and we hope soon new features will come. 

A
Alessandro Rossi
Operations Director, Italian Tech Services

Taxonary simplified our entire posted workers program. The automatic tax calculations and compliance checks have saved us from potential fines and made our expansion across the EU much smoother.

Eva Kowalski's testimonial for Taxonary
Eva Kowalski
Global Mobility Manager, ConsultPro Poland

The real-time tax calculations and automated documentation in Taxonary have revolutionized how we manage our posted workers. We've reduced our administrative overhead by 60%.

Javier Moreno's testimonial for Taxonary
Javier Moreno
CFO, Spanish Engineering Corp

Taxonary's platform handles all our tax compliance needs for posted workers seamlessly. The automatic updates to tax regulations across different jurisdictions are particularly valuable.

A
Anna Bergström
HR Compliance Manager, Nordic Solutions AB

The legal compliance features in Taxonary are outstanding. It keeps us updated with changing tax regulations across the EU and ensures we're always compliant.

D
Dimitris Papadopoulos
Legal Counsel, Mediterranean Consulting

Post-Brexit, Taxonary has been essential for managing our posted workers in the EU. The platform handles all the complex tax calculations and documentation requirements perfectly.

Claire Bennett's testimonial for Taxonary
Claire Bennett
International HR Director, UK Professional Services Ltd

The automated tax calculations and compliance checks in Taxonary have transformed how we manage posted workers. We've eliminated manual errors and reduced our administrative costs significantly.

L
Lukas Van der Berg
Tax Director, Benelux Consulting Group

We decided to start projects in Sweden and Spain but had no idea what price to offer the client. We used this calculator and managed to send out our proposal just in time. In the end, we signed the contract — and actual costs turned out to be 4% lower than estimated! So yes, there's a slight inaccuracy, but we definitely didn’t mind!

Maria Rodriguez's testimonial for Taxonary
Maria Rodriguez
HR Director, TechGlobal Solutions

Taxonary has transformed how we manage our international workforce. The platform's automated tax calculations and compliance features have streamlined our operations across the EU. It's been invaluable for ensuring accurate tax burden calculations and maintaining proper documentation for our posted workers.

Victor Chaykin's testimonial for Taxonary
Victor Chaykin
Founder & CEO, VLAVI

A super helpful tool for calculating salaries from net to gross, including taxes in both countries for posted workers. It also covers all extra project costs and lets you set a profit margin to get the client price. Saves a lot of time! The only downside is that the interface takes a bit to get used to.

Hans Weber's testimonial for Taxonary
Hans Weber
Finance Manager, Deutsche Engineering GmbH

For the last 2 years we saw an opportunity to start working in Sweden, but never tried due to the lack of understanding how to proceed with working in foreign country. Many offers were refused from our side. Than we saw an advertisement of Taxonary and tried just to check what we can get. After deeper work with calculator we understood how we can start working in Sweden and nowadays we already think about expansion to Norway. 

Sophie Laurent's testimonial for Taxonary
Sophie Laurent
Tax Compliance Officer, BuildCorp France

Before Taxonary we used classic consultancy services and paid about 2 000 euro per month. Now we use Taxonary and get the same results. There is still room for improvement and we hope soon new features will come. 

A
Alessandro Rossi
Operations Director, Italian Tech Services

Taxonary simplified our entire posted workers program. The automatic tax calculations and compliance checks have saved us from potential fines and made our expansion across the EU much smoother.

Eva Kowalski's testimonial for Taxonary
Eva Kowalski
Global Mobility Manager, ConsultPro Poland

The real-time tax calculations and automated documentation in Taxonary have revolutionized how we manage our posted workers. We've reduced our administrative overhead by 60%.

Javier Moreno's testimonial for Taxonary
Javier Moreno
CFO, Spanish Engineering Corp

Taxonary's platform handles all our tax compliance needs for posted workers seamlessly. The automatic updates to tax regulations across different jurisdictions are particularly valuable.

A
Anna Bergström
HR Compliance Manager, Nordic Solutions AB

The legal compliance features in Taxonary are outstanding. It keeps us updated with changing tax regulations across the EU and ensures we're always compliant.

D
Dimitris Papadopoulos
Legal Counsel, Mediterranean Consulting

Post-Brexit, Taxonary has been essential for managing our posted workers in the EU. The platform handles all the complex tax calculations and documentation requirements perfectly.

Claire Bennett's testimonial for Taxonary
Claire Bennett
International HR Director, UK Professional Services Ltd

The automated tax calculations and compliance checks in Taxonary have transformed how we manage posted workers. We've eliminated manual errors and reduced our administrative costs significantly.

L
Lukas Van der Berg
Tax Director, Benelux Consulting Group
All-in-one solution

Stay Compliant. Taxonary for Global Workforces.

Taxes

Taxes in both the tax residency country and the country of temporary project work.

Net-to-Gross

From Net payroll rate to Gross accordingly.

Cost Breakdown

Project-related costs for temporary work abroad — transport, accommodation, uniform, etc.

Payroll

Allowances for daily expenses and travel, as extra payments or part of pay.

Margin

The client price is calculated based on the entered profit percentage.

Additional Costs

Inclusion of estimated benefits and reserves, if applicable.

14-days trialFull refund if you're not satisfied.

Fair pricing for all types of businesses

Popular
Pro
€239.99€199.99/month
Billed monthly
The perfect plan for professionals
  • Tax Calculations
  • Net-to-Gross Conversions
  • Cost Calculations
  • Detailed Breakdown
  • Margin Calculations
  • Export to PDF

FAQ

Frequently Asked Questions

Blue Collar Counting Money
  • Taxonary is a tax calculator designed for companies that send employees to work in other countries. It helps HR, payroll, and finance teams calculate taxes quickly and accurately.
  • We currently support all major European countries, and we're continuously expanding to include more tax jurisdictions.
  • We use verified tax data and keep it constantly updated to ensure your results reflect the latest regulations and tax treaties.
  • Our system checks for changes regularly and updates tax rates, allowances, and rules automatically.
  • Yes, you can export the results as a PDF for record-keeping or further analysis.
  • No, Taxonary is fully cloud-based. All you need is a browser.
  • Absolutely. Whether you manage a team of 2 or 200, Taxonary is built to save you time and reduce compliance risks.
  • Yes. We use industry-standard encryption and follow strict data privacy practices to keep your information safe.