BizTaxCalc Blog
Guides and comparisons on business and freelance tax across 13 countries — written to be genuinely useful, backed by official sources.
Country guides
Self-Employed Tax in the USA 2026: Sole Proprietor & LLC Explained
A clear guide to how sole proprietors and single-member LLCs are taxed in the United States, covering the 15.3% self-employment tax, federal brackets, and the QBI deduction.
Country guides
Self-Employed Tax in the UK 2026: The Sole Trader Guide
Everything a UK sole trader needs to know about tax in 2025/26, from income tax bands and the personal allowance to Class 4 National Insurance and Self Assessment.
Country guides
Self-Employed Tax in Spain 2026: The Autónomo Guide
Being an autónomo in Spain means juggling two separate systems: progressive IRPF income tax and the RETA social-security contributions that are now tied to your real earnings. Here is how both work in 2026, plus the tarifa plana that makes year one cheap.
Country guides
Self-Employed Tax in Italy 2026: The Complete Forfettario Guide
A plain-English walkthrough of Italy's forfettario flat-rate tax for freelancers and sole traders in 2026, including the 5% starter rate, ATECO coefficients, and INPS.
Country guides
Self-Employed Tax in Germany 2026: Freiberufler vs Gewerbe
The single most important decision for a German self-employed person is whether the tax office classifies you as a Freiberufler or a Gewerbe. It changes your paperwork, your trade tax bill and your cash flow. Here is how both work in 2026.
Country guides
Self-Employed Tax in France 2026: The Micro-Entrepreneur Guide
France's micro-entrepreneur regime is the simplest way in Europe to be legally self-employed: you pay a flat percentage of your turnover and skip most accounting. Here is exactly how the 2026 numbers work, and where the regime stops being a good deal.