Tech riderRev. 22 Sept 2026
- 1Runs onAPI
- 2CostsFree plan · paid from $60/mo
- 3Supported tax typessales tax
- 4Return filingYes
- 5Filing support levelautomated
- 6Sales tax calculationNo
- 7Tax registrationYes
- 8API accessYes
8 lines stated Written from the maker's own pages: sidr.io

Overview
Sidr Tax is ranked #91 of 109 in tax compliance software on Specifiction, made by Sidr Tax (Dover, Delaware, United States). It runs on API. There is a free plan. Paid plans start at $60/mo.
Sidr Tax plans and pricing
All plansFree Free Zero monthly subscription fees; free nexus monitoring Nexus monitoring across all states · Detailed reporting and analytics · CSV transaction imports · Historical liabilities analysis · Comprehensive risk assessment · Address validation sidr.io · 22 Sept 2026
Plus $60/mo $60 per filing; $150 per state registration Automated filing and remittance · Registration and deregistration · Virtual mailbox for state notices · Rooftop-accurate tax calculations · Automatic tax code classification · Enhanced filing autopilot sidr.io · 22 Sept 2026
Premium Advanced API access · Dedicated account management · Priority access to sales tax experts · Volume-based discount · Voluntary Disclosure Agreements · Error insurance coverage sidr.io · 22 Sept 2026
Compared on tax compliance software
Company
- Headquarters
- Dover, Delaware, United Statessidr.io · 28 Sept 2026
Best Sidr Tax alternatives
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Where it ranks on Specifiction
- Best Tax Compliance Software in 2026#91 of 109
Is Sidr Tax yours?
Claim it for free: prove the domain, then correct facts, plans and screenshots. An editor reviews every change.
Sources
- sidr.io· checked 28 Sept 2026
- sidr.io/pricing· checked 22 Sept 2026


