US tax calculator resources, datasets, and tools
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Updated
May 10, 2026
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us-tax
Here are 11 public repositories matching this topic...
Apply for a US ITIN number as a non-US resident — IRS Certified Acceptance Agent service. For tax filing, US LLCs, real estate investment, YouTube/AdSense, and dividend income.
irs itin us-tax itin-application non-resident itin-number w7-form acceptance-agent tax-identification
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May 8, 2026
Curated list of free US calculators 2026 — tax, mortgage, salary, construction, nutrition, college, energy
construction calculator awesome developer-tools solar awesome-list college mortgage nutrition calculators salary free-tools ai-detection us-tax
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May 10, 2026
WHMCS addon: replace WHMCS's built-in tax handling with self-hosted OpenSalesTax — destination-based US sales tax on hosting invoices.
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May 19, 2026 - PHP
Saleor Tax App connector — destination-based US sales tax via the self-hosted OpenSalesTax engine
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Jun 22, 2026 - TypeScript
OpenSalesTax tax provider for Medusa v2 — self-hosted US sales-tax calculation. Apache 2.0.
ecommerce tax sales-tax medusa tax-calculator headless-commerce apache-2 medusajs medusa-plugin us-tax opensalestax medusa-plugin-tax
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Jun 22, 2026 - TypeScript
Bagisto package: destination-based US sales tax via the self-hosted OpenSalesTax engine
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Jun 22, 2026 - PHP
Sourced JSON datasets and an SVG chart generator for U.S. federal tax rate history (personal, corporate, capital gains) from 1909 to 2026. Every major tax act annotated.
svg irs tax data-visualization open-data economics historical-data income-tax capital-gains us-tax corporate-tax tax-policy tax-history
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Apr 28, 2026 - JavaScript
Vendure plugin for destination-based US sales tax via the self-hosted OpenSalesTax engine
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Jun 22, 2026 - TypeScript
Magento 2 module for destination-based US sales tax via the self-hosted OpenSalesTax engine
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Jun 22, 2026 - PHP
PFIC Form 8621 calculator and DIY workflow resources for PFIC self-filing, maintained by 8621calculator.com.
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Jun 16, 2026
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