Freelance Hourly Calculator: Find Your True Billing Rate
This calculator is built for remote workers, independent contractors and self-employed professionals across Latin America (Brazil, Mexico, Colombia, Argentina, Chile) and global remote markets. It accounts for taxes, social security, unpaid time off, overhead, invoice markup and non-billable hours so the rate you charge actually produces the net monthly salary you want.
If your target is $5,000 net per month as a remote developer, charging $50/h without doing the math will leave you short. Once you factor in MEI/SAT/DIAN contributions, vacation, holidays, sick days, admin time and the 30–40 % of weeks that are non-billable (sales, calls, proposals, learning), the realistic total is closer to 1,100–1,400 billable hours per year, not 2,080.
Why Your Per-Hour Rate Matters
Most freelancers pick a rate by copying peers or dividing a former full-time salary by 160 hours and adding 10 %. That method systematically underbills. Salaried employees receive paid time off, employer-side tax contributions, health insurance, equipment, training and infrastructure — all of which you must fund yourself.
Gross vs. Net: The Freelancer's Gap
A São Paulo developer billing R$ 180/h (~$35) for 160 hours appears to earn R$ 28,800 gross. Under MEI or Simples Nacional, roughly 11–22 % goes to tax and INSS, 5 % to health insurance, 8–10 % to tools and home-office, and 15 % should be set aside as vacation and 13th salary provisions. That $35/h gross collapses to roughly $18–22/h net — a 37–49 % gap.
How to Use This Calculator: 4 Input Rules
- Enter your target net monthly income in local currency (BRL, MXN, COP, ARS, USD) — the amount you want after all deductions.
- Choose your jurisdiction preset (Brazil MEI, Mexico SAT Persona Física, Colombia DIAN Régimen Simplificado, US LLC / Sole Proprietor, or Custom) to pre-fill the correct tax and social security percentages.
- Set your billable hours per week and number of unpaid weeks off (vacation + holidays + sick buffer).
- Add your annual overhead (software, internet, coworking, accountant, health insurance, laptop amortization) and your profit markup (typically 15–30 % for solo, 30–50 % for agency-style billing).
Tax & Social Security: Brazil, Mexico, Colombia
Brazil MEI (R$ 90k/year cap) charges flat DAS (~R$ 71–77, 2026) covering INSS, ISS, ICMS; above MEI use Simples Nacional (6–22 %). In Mexico, SAT Persona Física uses marginal brackets (~1.92–35 %, 2026) + IMSS ~10–11 %. Colombia DIAN Régimen Simplificado: 4.41–13.68 %. Confirm brackets with your accountant.
Invoice Markup: Protect Your Profit Margin
Markup is the buffer that keeps your business alive. A 25 % markup covers scope creep, late payments, unpaid revisions, dry spells between clients and churn risk. If you bill through an agency or talent platform taking 10–20 %, stack your markup on top of that fee.
Brazil MEI, target R$ 15,000 net / month (~$2,900):
- Annual net incl. 13th + vacation: R$ 225,000 · Overhead: ~R$ 18,800
- Effective tax & social: ~22 % · 1,176 billable hrs/year
- True cost: R$ 250–260/hr · 25 % markup → invoice R$ 315–325/hr (~$60–62 USD)
The naive "R$ 15,000 ÷ 160 = R$ 94/hr" leaves you 62 % below break-even.
Sources
- IRS Topic 704 - Self-Employment Tax — https://www.irs.gov/taxtopics/tc704
- Receita Federal do Brasil - Microempreendedor Individual (MEI) — https://www.gov.br/empresas-e-negocios/pt-br/empreendedor/quero-ser-mei
- OECD - Classification of Workers — https://www.oecd.org/employment/Classification-of-workers.pdf
- US DOL Self-Employed Center — https://www.dol.gov/agencies/whd/self-employed
YMYL Disclaimer
This tool provides general educational guidance and illustrative calculations for freelance and self-employed billing scenarios. It is not financial, tax, legal, accounting or business advice. Tax rates, social security brackets, MEI/SAT/DIAN thresholds, labor regulations and currency values change frequently and vary by jurisdiction, filing status, revenue band, activity code and individual circumstances. Run your numbers by a licensed local accountant (Contador, CPA, Contador Público) or tax advisor before setting client rates, invoicing, filing returns or making business decisions. The calculator uses reasonable default assumptions; your actual liability or take-home pay may differ materially.