Mainstreet Startup Deals & Discounts
Turn your startup's R&D spending into real tax savings and cash flow
Deal Overview
Best Offer
$12K
Total Value
$12K
Available Deals
1
Available Deals
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$500 in credits
$500 in credits
Promo code, redemption steps & eligibility
Mainstreet Startup Deals - Overview
Startups that qualify for MainStreet's startup program can receive platform credits toward the cost of running their R&D and tax-incentive claims. The benefit is positioned for early-stage, venture-style companies - the same profile that tends to have meaningful engineering payroll but little or no taxable profit yet, which is exactly where the payroll-tax R&D offset delivers cash back rather than a deferred deduction.
The value of the program is straightforward: it lowers the friction of starting a claim, so a founding team can test whether their R&D spending translates into a real federal or state credit before committing to a full engagement. Because MainStreet works alongside your existing payroll provider and your CPA, the credits apply to a workflow most teams can adopt without re-platforming their finance stack.
Eligibility is application-based and tied to startup status - typically newer companies under the gross-receipts thresholds that define a qualified small business, and often those backed by an accelerator, fund, or partner ecosystem. Approval, the exact credit amount, and any tier requirements are confirmed during the application and onboarding process rather than guaranteed up front.
About Mainstreet
Most early-stage founders leave money with the IRS without realizing it. MainStreet exists to close that gap. The platform plugs into the payroll and accounting tools a startup already runs, reads how the company spends on engineering and product work, and then identifies the government tax credits that spending actually qualifies for - with the federal Research & Development (R&D) credit at the c...
Key Features
Federal R&D tax credit qualification
MainStreet analyzes how your team spends on engineering, product, and development work to determine which costs qualify for the federal Research & Development credit, then quantifies the credit you can claim.
Payroll-tax offset for pre-profit startups
Qualified small businesses can apply the R&D credit against employer payroll taxes - up to $500,000 per year under current federal rules - so the savings show up as cash even when a company isn't yet profitable.
Payroll and accounting integrations
It connects securely (via Finch) to payroll and finance systems including Gusto, Rippling, ADP, Paychex, Namely, TriNet, OnPay, and accounting tools like QuickBooks and Sage to pull the data needed to qualify your business.
IRS form preparation and CPA handoff
MainStreet prepares the required filings - Form 6765 for the credit and Form 8974 for the payroll election - and packages them so your accountant can include them in your annual tax return.
Ongoing multi-credit discovery
Beyond R&D, the platform scans for state R&D credits, retirement-plan startup credits, the small business health care credit, and other incentives, re-qualifying your business as your payroll data changes.
Cash advances on earned credits
For credits you're accruing over the year, MainStreet offers advances so a startup can access the value sooner instead of waiting until the credit is realized at filing.
Pros & Cons
Pros
- Designed for the pre-profit reality of startups - because the credit can offset payroll taxes rather than income tax, even a company with no profit can get real cash back, which is the exact situation most early-stage teams are in.
- Low effort to find out if you qualify - the platform reads data straight from your existing payroll and accounting tools, so qualification doesn't require a founder to assemble spreadsheets or run a manual study.
- Works with your existing CPA and payroll stack - MainStreet prepares the IRS forms and hands them to your accountant to file, rather than forcing you to switch providers or finance workflows.
- Covers more than just R&D - it also surfaces state R&D, retirement-plan, and health-care credits, so a single connection can keep finding incentives as the business grows.
Cons
- Success-fee pricing eats into the savings - MainStreet's fee is taken as a percentage of the credits it finds (capped at 20% of savings), so the net benefit is smaller than the gross credit, and it's worth comparing against a flat-fee CPA for larger claims.
- Eligibility is genuinely restrictive - the payroll-offset benefit is limited to qualified small businesses (under five years of gross receipts and under $5M in receipts for the year), so older or higher-revenue companies won't see the headline payroll advantage.
- You still depend on your CPA to file - MainStreet prepares the forms but does not file your return, so the final step and any filing-deadline coordination still sits with your accountant.
- Connecting payroll data requires trust - qualification depends on granting access to payroll and accounting systems, which some founders may be cautious about even with a secure integration layer.
Use Cases
Seed-stage software startup with heavy engineering payroll. A pre-revenue team paying salaries to developers can use MainStreet to convert that R&D spend into a federal credit and apply it against payroll taxes, freeing up cash to extend runway.
Founder who has never claimed the R&D credit. Companies often assume the credit is only for large, profitable corporations. MainStreet's automated qualification is a low-effort way to discover whether years of product development actually generate a claimable credit.
Startup that wants the credit but already has a CPA. Rather than asking an accountant to run an unfamiliar R&D study, a team can let MainStreet build the documentation and Forms 6765/8974, then route them to the CPA to file - splitting the specialized work from the standard return.
Growing company collecting multiple incentives. As a business adds employees, sets up a retirement plan, or offers health coverage, MainStreet can re-scan for additional credits (state R&D, retirement-plan startup credit, small business health care credit) on the same connected data.
Cash-constrained team that needs the value sooner. For credits accruing through the year, the advance option lets a startup access part of the value ahead of filing instead of waiting for the return.
Pricing
MainStreet is free to get qualified - there's no upfront charge to connect your systems and find out whether you have a claimable credit. The company charges on a success-fee basis: its fee is tied to the savings it identifies and claims and is capped at 20% of those savings. For example, if MainStreet qualifies your business for $100,000 in credits, its fee would not exceed $20,000.
Because pricing is a share of value delivered, you only pay meaningfully when MainStreet actually finds and secures a credit. Promotional and partner channels have at times offered a reduced first-year rate, and the platform also offers cash advances on credits being earned in real time. Exact fee terms, any startup-program credits, and advance availability are confirmed during onboarding, since they depend on your company's size, eligibility, and the specific credits in play. Founders should weigh the percentage fee against a flat-fee CPA engagement, particularly for larger expected claims.
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