MainStreet · Year-End Assessment

Unlock Your R&D Tax Credit
— Before It's Too Late

Answer a few quick questions to assess your eligibility and estimated credit. Takes under 10 minutes. Data goes directly to your advisor team.

🔒 Secure & Confidential ⚡ Instant Credit Estimate 📋 IRS-Backed Process
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Business Basics
Section 1 of 5 · General Information
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Valid email required
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Payroll & Financials
Section 2 of 5 · Key Financial Inputs
Why this matters: The R&D credit is calculated primarily on wages paid to employees performing qualified activities. Accurate payroll data is the single biggest driver of your credit estimate.
If unsure, this can be an estimated amount. Can be found on your W-3 tax form with your W-2s, or on your annual payroll summary report.
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Include: engineers, scientists, developers, lab staff, production/process improvement staff
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R&D Eligibility — The 4-Part Test
Section 3 of 5 · IRS Qualification Criteria
The IRS requires all four criteria to be met for activities to qualify. Answer honestly — partial qualification still generates significant credits.
Examples: new product design, improved manufacturing process, internal software systems, algorithms, formulations
This doesn't require a PhD — production line optimization, software development, and food science all qualify
Examples: "We weren't sure if the new process would achieve the target yield" or "We didn't know if the algorithm would scale"
Examples: A/B testing, prototype builds, lab experiments, iterative design sprints, simulation runs
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R&D Activity Details
Section 4 of 5 · Business Components & Expenses
Select all that apply
Note: You may still qualify even in mixed-IP arrangements. An advisor will clarify.
Plain English is fine — e.g. "We developed a new gluten-free cookie formulation that required 6 months of kitchen trials" or "We built an internal inventory optimization algorithm from scratch."
Please provide a brief description

List employees whose roles involve qualifying R&D work. This is used to calculate your Qualified Research Expenses (QREs). Add as many as apply.
First & Last Name Job Title % of Time on R&D (Est.)

Examples: AWS, Google Cloud, Azure, DigitalOcean, dedicated servers used in R&D development or testing
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Prior Years & Next Steps
Section 5 of 5 · History & Engagement Preferences
Startups with under $5M revenue can apply R&D credits against payroll taxes — a major cash benefit even with no income tax liability.

Upload Supporting Documents

These documents help us calculate your credit accurately. All uploads are encrypted and stored securely. You can skip any document and upload later.

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Most Recent Tax Returns

Form 1120, 1120-S, 1065, or 1040 — whichever applies to your entity type

Click to upload
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Most Recent Year W-2s (All)

All employee W-2 forms for the tax year being assessed

Click to upload
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Full Year Payroll Detail Summary Report

Annual payroll summary from your payroll provider (ADP, Gusto, Paychex, etc.)

Click to upload

Accepted formats: PDF, Excel, CSV, JPG, PNG · Max 25MB per file · You may also email documents directly to eric@mainstreet.com

Ready to Submit Your Assessment?

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Assessment Received!

Your year-end R&D assessment has been submitted. Your MainStreet advisor will review your responses and reach out within 1 business day. Your data has been synced to Salesforce and your shared team sheet.