Tax companies, products & suppliers
Tax calculation, filing and research as the product, not bookkeeping or audit. Jobs: computation; filing support; tax research in the product.
What is Tax?
Tax calculation, filing and research as the product, not bookkeeping or audit. Jobs: computation; filing support; tax research in the product.
What problems does it solve?
Tax still depends on specialists re-keying from the books.
Typical business use cases
- Computation
- Filing support
- Tax research in the product
Important capabilities
- Jurisdictions
- Return types
- Workpapers
What buyers should evaluate
- Who signs the return
- Jurisdictions covered
- Training on taxpayer data
Risks and governance considerations
A suggested position filed without a named tax owner.
Procurement checklist
- Signer
- Jurisdictions
- Workpapers
Relevant AI Trustmark assurance
AI Trustmark independent findings appear only when an assessment or certificate exists. Category membership does not imply verification.
Products and providers
Open a product profile for its catalogue details, or use the provider link for the company profile. Claimed listings appear first, then by name. Payment never changes the order.
By april
april’s AI-powered tax engine helps platforms offer tax filing, tax planning, and tax estimation tools. Integrate white-label tax solutions to deliver truly holistic financial serv
By Black Ore
Black Ore's Tax Autopilot automates tax preparation for CPA firms with 99% accuracy and 98% time savings. Trusted by 40% of Top 20 firms. Request a demo today. Tax Autopilot i
By Blue dot
Blue Dot's tax compliance platform helps you connect the dots to complete each employee’s transactional story, reaching beyond tax compliance and to calculate and identi
By Blue J
Blue J is an AI tax research platform for accountants and tax professionals that delivers answers in seconds with verifiable sources. It supports advisory, compliance, tax writing
By Filed
Filed reads source documents and compares them against the return to catch what tax software diagnostics miss. Prep, review, and advisory in one platform. Filed AI Tax Prep is File
By Instead
Instead is an AI agent for tax research, planning, filing, and defense. Organize documents, find savings, and file returns in one place. Instead Entity Agent is Instead's software
By Kintsugi
Kintsugi is Kintsugi's software product, from Kintsugi AI, Inc. Published at trykintsugi.com. Directory filing: Tax. Vendor legal name on this product record: Kintsugi AI, Inc. Kin
By Sphere
Sphere is Sphere's software product, from Sphere Technology, Inc. Published at getsphere.com. Directory filing: Tax. Vendor legal name on this product record: Sphere Technology, In
By TaxGPT
AI tax assistant for tax pros & accountants. Boost productivity by 10x. Automate tax preparation, tax research, get cited tax answers in seconds, draft memos, analyze tax documents
By taxy.io
taxy.io is taxy.io's software product, from taxy.io GmbH. Published at taxy.io. Directory filing: Tax. Vendor legal name on this product record: taxy.io GmbH. taxy.io taxy.io taxy.
Products
Claimed products appear first. Ranking packs and payment do not change this list.
- april Tax Platform· april
- Blue J· Blue J
- Filed AI Tax Prep· Filed
- Instead Entity Agent· Instead
- Kintsugi· Kintsugi
- Sphere· Sphere
- Tax Autopilot· Black Ore
- TaxGPT· TaxGPT
- taxy.io· taxy.io
- VATBox· Blue dot
Related categories
Relevant procurement and assurance guides
Frequently asked questions
What is Tax?
Tax calculation, filing and research as the product, not bookkeeping or audit. Jobs: computation; filing support; tax research in the product.
What should not be listed as Tax?
Products whose buyer job is bookkeeping, audit, or legal research. Those belong on their own category page so search queries are not split.
Has AI Trustmark independently assessed every Tax supplier?
No. A category listing is descriptive. Independent assessment is shown only on company or product pages that carry Trustmark evidence.
What model or provider changes should a buyer insist on being told about?
Material change usually includes a new model family, new region, new subprocessor, new write-capable tool, or a change that affects logging, privacy or human oversight. Those changes should trigger evidence refresh rather than a silent release.
How should buyers verify where AI customer data is processed?
Ask for the named processing locations, cloud regions and any subprocessors that see prompts, files or outputs. A directory listing is not evidence of residency. Independent assessment records the locations that were in scope on the assessment date.
Does a TrustMark on one product cover the rest of the company?
No. Independent assessment is scoped to the named organisation and, where relevant, the named product. Category pages list suppliers as a topic label. They do not imply that every listed company has been assessed.
What incident-handling evidence is useful for AI suppliers?
Buyers should see how AI-specific failures are detected, contained and notified — including unsafe outputs, data leakage and unauthorised agent actions. An incident policy that never mentions models, prompts or tools is incomplete for this class of product.
What security testing evidence should buyers request for an AI product?
Ask what was tested, against which version, whether prompt-injection, data-exfiltration and tenant isolation were in scope, and where failed prompts were stored. A generic ISO certificate or a vendor scanner screenshot is not by itself an AI TrustMark assessment.