Compare 3 tax compliance apps, established products and new arrivals in one list.
Updated · Also called tax compliance software
What AppWatch tracks in this market today.
Every one we track, most recently added first. Listed by date, not ranked.
| App | Built on | Domain since | Pricing | Added |
|---|---|---|---|---|
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Polar is an open source, developer-first monetization platform and Merchant of Record for software companies — handling payments, subscriptions, usage-based billing, and global tax compliance.
| Next.js, Vercel |
| 2022 |
| Pricing page |
VAT Engine VAT Engine is a developer-focused platform for integrating EU VAT calculation and compliance workflows into SaaS, e-commerce, and other digital products. | Next.js | 2026 | Pricing page |
employkids The IRS lets you pay your kids for real work. That income can go into a Roth IRA and grow tax-free. $4k/year from age 10-18 becomes over $1M by retirement. The catch? Paperwork. Agreements, work logs, payment records. Most parents never bother because it's annoying. We make it easy. | Next.js, Vercel | 2025 | Not measured |