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The R&D 4-Part Test: How to Determine Eligibility for the Research & Development Tax Credit

Source Advisors May 7, 2026

The Research & Development (R&D) Tax Credit is one of the most valuable tax incentives available to businesses investing in innovation. However, not every project qualifies. To determine eligibility, the IRS applies a framework known as the R&D 4-Part Test under Internal Revenue Code (IRC) Section 41. Understanding how this test works is essential for identifying qualifying activities, supporting documentation

R&D

The R&D 4-Part Test: How to Determine Eligibility for the Research & Development Tax Credit

Source Advisors May 7, 2026

washington business people working at table with laptop

Sales & Use Tax

What is a Reverse Sales & Use Tax Audit?

A Reverse Sales & Use Tax Audit (RSUTA) is a structured review of prior period purchase activity designed to identify and recover Sales & Use Tax overpayments as opposed to the traditional focus on underpayments in state audits. Whereas State initiated audits are aimed at detecting underpayments and assessing additional

Kamal Shah, CPA April 16, 2026

R&D

The R&D 4-Part Test: How to Determine Eligibility for the Research & Development Tax Credit

The Research & Development (R&D) Tax Credit is one of the most valuable tax incentives available to businesses investing in

Source Advisors May 7, 2026

Sales & Use Tax

What is a Reverse Sales & Use Tax Audit?

A Reverse Sales & Use Tax Audit (RSUTA) is a structured review of prior period purchase activity designed to identify

Kamal Shah, CPA April 16, 2026

Sales & Use Tax

What is Washington Business & Occupational (B&O) Tax?

Washington Business & Occupation (B&O) Tax is a tax imposed by the state of Washington on the privilege of doing

Jaclyn Harris January 14, 2026

R&D

R&D

How to Qualify your R&D Tax Credit Provider

Our consultative approach sets us apart from other providers. It allows us to invest time in understanding clients’ history, current business direction and future growth objectives. Each year we re-evaluate a company’s ability to take the credit and provide ongoing recommendations to improve the R&D tax credit process. Our nationwide team of

Rachel Bishop, CPA February 10, 2022

179D

R&D & Energy For Real Estate: Tax Accounting Methods

What Does the IRS Extending the R&D Tax Credit Claims Transition Period Mean? Construction and real estate firms often ask us: “How do we qualify for the R&D tax credit?” Our boilerplate answer is to review the 4-part test below to ensure you have a qualification marker that covers the

Deb Roth, CPA November 15, 2021

Cost Segregation

Energy

Sales & Use Tax

The Usage and Management of Tax Exemption Certificates

What is a Tax Exemption Certificate? Tax exemption certificates are documents issued by taxing authorities, usually the states, that grant businesses exemption from certain taxes. These documents are issued as a certificate and must be presented to the taxing authority to claim the exemption. Tax exemption certificates are typically issued

Kamal Shah, CPA February 16, 2023

person calculating sales and use tax with calculator on table

Sales & Use Tax

What is the difference between Sales & Use Tax and Value Added Tax?

Sales and Use Taxes vs Value Added Tax Sales and use taxes in the United States and the value-added tax (VAT) used in most other countries have some similarities and differences. Similarities: Both sales and use taxes and VAT are indirect taxes, meaning that they are levied on the sale

Chris Vignone February 10, 2023