automated checks
18+
Run structured checks across returns, nexus, tax attributes, deferred positions, and historical filing patterns.
Tax DD
Tax due diligence software needs to connect returns, apportionment, nexus indicators, and tax attributes to the live deal record. Sorai gives tax teams an automated workspace for NOL review, Section 382 screening, SALT analysis, and deferred tax assessment so exposure stays visible while the transaction is still moving.
Expert byline
Reviewed by Sorai's tax diligence workflow team
NOL, SALT, and deferred tax review design
Quick answer
Tax due diligence is the process of identifying historical tax exposure, testing tax attributes, and evaluating transaction-specific tax risk before a deal closes. Sorai gives teams tax due diligence software that automates NOL, SALT, and deferred tax review while preserving the supporting logic behind every finding.
automated checks
18+
Run structured checks across returns, nexus, tax attributes, deferred positions, and historical filing patterns.
screening
382
Review ownership change implications and whether NOL value could be materially limited after closing.
analysis
SALT
Map nexus indicators, filing gaps, and state exposure without isolating tax from the broader deal workflow.
Definition
An NOL limitation is the annual ceiling on how much of a target's historic net operating losses can be used after ownership changes. In acquisitions, Section 382 is the main U.S. rule that can reduce the practical value of those tax attributes.
Core sections
Section 01
Tax due diligence reviews the target's historical tax profile and the transaction's likely tax consequences before closing. Buyers need to know where there may be unpaid exposure, whether tax attributes are usable, how structure choices change outcomes, and which issues should influence price, indemnities, or purchase agreement drafting.
The challenge is that tax risk often sits across returns, workpapers, registrations, payroll data, financial statements, and side explanations from management. Sorai is designed to make that review more structured by turning those inputs into a connected system of checks, findings, and reviewer decisions.
Section 02
Sorai organizes tax due diligence around a repeatable set of checks so analysts can move faster without flattening the work into a generic checklist. The platform can flag missing returns, inconsistent state filings, tax attribute questions, uncertain deferred balances, and other issues that deserve deeper technical review.
That operating model helps tax diligence scale because each check can produce a finding, supporting evidence, reviewer comments, and a status. Instead of summarizing everything at the end, the work is already structured while the deal team is still making decisions.
Section 03
Net operating losses can look valuable in a deal model, but their real value depends on whether they remain usable after an ownership change. Sorai's NOL and Section 382 workflow is built to organize attribute history, ownership change indicators, and supporting calculations so teams can quantify the practical downside before they underwrite the value.
The point is not to replace tax judgment. It is to make sure that the relevant returns, schedules, and review notes stay attached to the conclusion. When the sponsor asks how much of the tax shield is real, the answer should already be supported and traceable.
Section 04
State and local tax exposure is one of the fastest ways for tax diligence to become commercially relevant. A target can create nexus through sales, payroll, remote employees, property, or operational activity long before management has a clean filing posture in every state where exposure exists.
Sorai helps teams gather those signals and keep them tied to the broader deal record. If a SALT issue is likely to affect purchase price, escrow, or remediation cost, the financial and legal teams can see that context instead of waiting for a separate memo to land late in the process.
Section 05
Deferred tax balances often expose disconnects between the financial statements and the tax filing position. Sorai's deferred tax review workflow lets teams reconcile book and tax differences, challenge unsupported balances, and document where deferred assets may not be realizable under the buyer's ownership model.
That matters because deferred items can influence purchase accounting, tax sharing assumptions, and post-close economics. A clean diligence process should show not just the number, but why the number is reliable and what assumptions it depends on.
Section 06
Tax findings rarely live in isolation. A nexus issue may change the quality of earnings view, a structure decision may alter deferred tax balances, and a tax attribute conclusion may affect the buyer's model. Sorai keeps those dependencies visible by letting tax work connect directly to the financial diligence record.
This is where tax due diligence software becomes materially more useful than a document repository. The system does not only store returns. It helps the deal team understand which tax findings change the economics of the transaction and where follow-up belongs next.
Section 07
Traditional tax diligence often ends with a technically sound memo that arrives after the commercial discussion has already moved on. Sorai improves that operating model by making the tax record readable while the work is live, not only after the memo is drafted. That gives sponsors, legal teams, and financial reviewers a clearer sense of which tax issues are already material.
The result is a cleaner escalation path. Instead of re-translating tax findings for each audience, Sorai preserves the issue, the supporting return data, the reviewer judgment, and the commercial implication in one workflow that can travel with the deal.
Frequently asked questions
It automates the structure of the review: organizing returns, running repeatable checks, surfacing likely exposures, and preserving reviewer decisions so tax findings stay connected to the live deal process.
Section 382 can limit how much of a target's historic NOLs a buyer may use after a change in ownership, which means the modeled tax asset may be worth less than management expects.
Sorai organizes nexus indicators, filing histories, apportionment signals, and reviewer notes into one workflow so SALT exposure can be assessed early and shared with the rest of the deal team.
Connected pages
Internal link
See how tax findings connect directly to QoE, NWC, and purchase price mechanics.
Internal link
Use the pre-LOI workflow when tax screening needs to happen before exclusivity.
Internal link
Review glossary definitions for Section 382, SALT, and other diligence terms used across the site.
Request demo
We will walk through NOL, SALT, deferred tax review, and how the tax record connects to the rest of the deal.