Alphatax
6.4#3 in corporate tax softwareWebAPIWindows
VisitAlphatax vs PowerPlan Tax Provision
PowerPlan Tax Provision
5.9#12 in corporate tax softwareWeb
VisitWhat both publish
| Fact | Alphatax | PowerPlan Tax Provision |
|---|---|---|
| Company history | The company says Alphatax, formerly known as Tax Systems, was founded in 1991. | PowerPlan says it has helped asset-intensive businesses for 30 years; the page does not give a founding year or headquarters. |
| Headquarters | The site lists Magna House, 18–32 London Road, Staines-upon-Thames, TW18 4BP as its address. | Atlanta, Georgia, United States |
| Integrations | The Corporate Tax product offers APIs to connect with third-party systems and data, and Alphamap integrates with Alphatax for data mapping. | Robust data imports connect with tax information sources, including PowerPlan Tax Fixed Assets. |
| Security | Tax Systems says it has been ISO 27001 certified since July 2020, covering information held or processed by Alphatax. | PowerPlan says it maintains SOC 2 Type II certified infrastructure with continuous monitoring, regular third-party audits, and security controls. |
| Support | Customer support is available Monday to Friday, 09:00–17:30, and the company says 90% of queries are resolved within 24 hours. | Live support is available Monday through Friday from 8:00AM to 8:00PM ET, with phone and online case support. |
Pick Alphatax if…
Alphatax suits corporate tax and finance teams managing compliance, tax provision, VAT, or Pillar Two across entities and jurisdictions. Alphatax Pillar Two is described for multinational organisations.
Pick PowerPlan Tax Provision if…
PowerPlan Tax Provision suits tax departments at asset-intensive businesses, including utilities, oil and gas, telecom and transportation companies. It is intended for teams handling regulated or non-regulated income tax calculations.