The Stack Index / Tax
Tax
Sales tax and VAT, e-invoicing, income tax and R&D credits. 54 vendors.
- Sales tax & VAT
Indirect tax engine linking calculation, e-invoicing, reporting, filing and audit preparation for global compliance.
- Income tax provision
Thomson Reuters software that computes corporate tax provision estimates with drill-down analysis.
- Sales tax & VAT
AI-driven indirect tax platform: tax ID validation, calculation, e-invoicing and return filing worldwide.
- R&D and tax credits
AI software plus in-house tax experts to find and claim R&D tax credits (SR&ED and US R&D).
- Sales tax & VAT
End-to-end US sales tax, VAT and GST compliance including nexus monitoring, filings, registrations and exemption certificates.
- E-invoicing & compliance
Tax and financial compliance platform for GST filing, e-invoicing, AP automation and tax in India and the Middle East.
- Sales tax & VAT
Global sales tax and VAT/GST compliance for software companies: monitoring, registration, calculation, filing and remittance.
- R&D and tax credits
AI tax platform with expert review that finds and defends R&D credits, 179D and cost segregation (formerly SPRX).
- Transfer pricing & global tax
AI transfer pricing platform linking TP policies, intercompany agreements and financial results.
- Transfer pricing & global tax
AI-supported tax advisory for multinationals covering transfer pricing, R&D and fixed-asset incentives and sales tax.
- Sales tax & VAT
Sales tax platform with a managed tax team that calculates, registers and files sales tax and global VAT.
- Sales tax & VAT
Expert-backed sales tax compliance handling registrations, calculations, filing and remittance in the US and Canada.
- Sales tax & VAT
AI-native platform automating cross-border indirect tax compliance across 130+ jurisdictions.
- Sales tax & VAT
AI sales tax automation for ecommerce and SaaS that registers, files returns and remits tax.
- R&D and tax credits
AI platform producing audit-ready R&D tax credit and software capitalization reports from project and payroll data.
- Sales tax & VAT
Cloud tax compliance: sales tax and VAT calculation, returns filing, exemption certificates and 1099 reporting.
- R&D and tax credits
AI that identifies qualifying projects and produces audit-ready R&D tax relief claims.
- Transfer pricing & global tax
Customs platform with AI filing, tariff recovery, duty-overpayment auditing and trade intelligence.
- 1099 & information reporting
Tax APIs for platforms paying independent workers: TIN checks, 1099 filing and self-employment tax tools.
- E-invoicing & compliance
SaaS EDI integration, global e-invoicing, e-reporting and trust services for multinational companies.
- Sales tax & VAT
End-to-end sales tax, VAT and GST: obligation tracking, registration, calculation, collection and filing.
- 1099 & information reporting
Information reporting automation (1099, CARF, CRS, DAC7/DAC8) for digital-economy businesses across 70+ jurisdictions.
- E-invoicing & compliance
E-invoicing platform and Peppol access point with API for international e-invoicing compliance.
- E-invoicing & compliance
Digital platform for e-invoicing, payments and compliance for businesses of any size.
- Income tax provision
Income tax provision software automating rate reconciliation and provision workflows.
- R&D and tax credits
Tax technology platform with expert support to identify and claim R&D tax credits.
- Transfer pricing & global tax
AI-native platform for global entity management, corporate filings, indirect tax and transfer pricing in 70+ countries.
- R&D and tax credits
Platform for clean energy capital including transferable tax credit and tax equity transactions for corporate buyers.
- E-invoicing & compliance
API and dashboard for issuing and stamping Mexican CFDI 4.0 electronic invoices, including Carta Porte.
- E-invoicing & compliance
REST API for issuing and managing Brazilian fiscal documents (NF-e, NFS-e, NFC-e, CT-e, MDF-e).
- E-invoicing & compliance
Fiscal automation for Mexico: issues CFDI 4.0 invoices per payment, with collections and SAT reconciliation.
- Sales tax & VAT
EU VAT compliance for online sellers: filings, OSS returns and deadline monitoring.
- E-invoicing & compliance
E-invoicing, e-reporting and tax-compliance API for compliant invoices in 30+ countries.
- E-invoicing & compliance
GST compliance and e-invoicing software for Indian enterprises.
- E-invoicing & compliance
Electronic invoicing platform and APIs for Brazilian NF-e, NFS-e and NFC-e issuance.
- Sales tax & VAT
Indirect tax automation for online businesses in 150+ countries, from threshold monitoring to filing returns.
- E-invoicing & compliance
Global tax compliance platform for e-invoicing, indirect tax, information reporting and identity verification.
- 1099 & information reporting
Online preparation and e-filing of 1099s, W-2s and other information returns with IRS and states (a Zenwork company).
- 1099 & information reporting
E-filing for IRS forms 1099, W-2, 941 and 1095 plus W-9 collection and state filings.
- Sales tax & VAT
Sales tax software that calculates, collects and files sales tax for ecommerce and SaaS businesses.
- Sales tax & VAT
VAT filings, bookkeeping and payroll for online sellers using AI-supported software and specialist accountants.
- Sales tax & VAT
Cross-border VAT and US sales tax compliance (incl. LumaTax): tracking, calculation, filing and remittance.
- E-invoicing & compliance
Software and expert services for global VAT, GST and sales tax compliance and e-invoicing.
- E-invoicing & compliance
Unified e-invoicing API connecting businesses to Peppol and 30+ national e-invoicing frameworks.
- Sales tax & VAT
VAT compliance service using vsuite technology to automate, manage and track VAT filings.
- 1099 & information reporting
Online filing of W-2, 1099 and 1095 forms with federal and state agencies plus recipient copy delivery.
- Transfer pricing & global tax
UK tax compliance software (formerly Tax Systems) for corporate tax, VAT, transfer pricing and Pillar Two reporting.
- R&D and tax credits
Software for preparing R&D tax relief claims, with portals for advisors and their clients.
- PageroAcquiredE-invoicing & compliance
E-invoicing network and compliance for exchanging invoices, orders and payment documents.
- TaxJarAcquiredSales tax & VAT
Cloud sales tax calculation, reporting and filing for ecommerce businesses.
- ecosioAcquiredE-invoicing & compliance
Managed cloud EDI and e-invoicing compliance service connected to company ERPs; part of Vertex since 2024.
- Track1099Acquired1099 & information reporting
1099 e-filing and W-9 collection, now part of Avalara 1099 & W-9.
Ordered by funding signal, then how complete the profile is. Never paid for.
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