{"id":"taxjar-api","name":"TaxJar API","homepage":"https://developers.taxjar.com","repo_url":"https://github.com/taxjar/taxjar-python","category":"legal","subcategories":["tax","sales-tax","compliance","e-commerce"],"tags":["taxjar","sales-tax","compliance","e-commerce","rest-api","sdk","automation"],"what_it_does":"Sales tax automation API for US-based e-commerce. Calculates real-time sales tax rates, manages nexus, automates filing, and handles exemptions. Simpler and more affordable than Avalara for mid-market.","use_cases":["Real-time US sales tax calculation for e-commerce checkout","Automated sales tax filing in states where nexus exists","Order-level tax reporting and categorization","Nexus determination for physical and economic nexus","Exemption certificate validation for B2B transactions"],"not_for":["International VAT outside the US (limited international support)","Enterprise-scale businesses needing global tax coverage (use Avalara)","Non-US tax jurisdictions as primary use case","Income tax or payroll tax calculations"],"best_when":"An agent needs straightforward US sales tax calculation and filing automation for an e-commerce business with multi-state nexus, at a more accessible price point than Avalara.","avoid_when":"You need global VAT compliance or enterprise-scale international tax coverage.","alternatives":["avalara-api","stripe-api"],"af_score":82.4,"security_score":null,"reliability_score":null,"package_type":"mcp_server","discovery_source":["github"],"priority":"low","status":"evaluated","version_evaluated":"current","last_evaluated":"2026-03-01T09:50:06.281735+00:00","performance":{"latency_p50_ms":100,"latency_p99_ms":400,"uptime_sla_percent":99.9,"rate_limits":"10,000 API calls/month on Starter, higher on Professional","data_source":"llm_estimated","measured_on":null}}