Substantiq Tax · Early Access

Keep every return line tied to a confirmed fact.

TaxLine turns tax documents into a reviewed fact set. Confirmed facts flow into the calculation and remain linked to the source document.

How it works

Where TaxLine does the thinking.

TaxLine reads tax documents and proposes the facts they contain. A fact must be confirmed before it reaches the tax calculation. Missing or conflicting information keeps the return from moving forward.

TaxLine workspace showing document review, tax facts, diagnostics and return status
Product interfaceSample data · captured 2026
01

Reads the documents

It finds the tax year, form type, taxpayer details, income and deduction facts.

02

Uses the right tax year

Confirmed facts feed the calculation rules for the selected year and stay linked to the return line.

03

Stops on missing support

Wrong-year documents, conflicting facts and unfinished review remain open.

One important limit: The software helps organize and check the work. It does not make an answer correct on its own. Sources, open issues and approval status stay visible.

Evidence-linked tax preparation

TaxLine

TaxLine turns tax documents into a reviewed fact set. Confirmed facts flow into the calculation and remain linked to the source document.

01

Fact provenance

It finds the tax year, form type, taxpayer details, income and deduction facts.

02

Year-specific logic

Confirmed facts feed the calculation rules for the selected year and stay linked to the return line.

03

Source-linked return lines

Wrong-year documents, conflicting facts and unfinished review remain open.

04

Readiness controls

It finds the tax year, form type, taxpayer details, income and deduction facts.

Early Access

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