Small Business Tax Preparation in Mandan, ND

Comprehensive Tax Support for Businesses

Goodhart & Associates PC provides reliable tax preparation for small and mid-sized businesses across Mandan, Bismarck, and surrounding North Dakota communities. Whether you operate as a sole proprietorship, LLC, S-Corp, partnership, or C-Corp, our CPAs handle every detail of your tax return. From filing Form 1065 for partnerships to Form 1120S for S-Corps, we ensure accuracy, compliance, and strategies to minimize your company’s tax burden.

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Complete Business Tax Services

Our business tax preparation goes beyond simply filing forms—we provide accurate reporting, clear communication, and proactive strategies so you stay compliant, avoid costly mistakes, and always know where your business stands.

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Federal and State Business Tax Returns

We prepare and securely e-file both federal and state returns, ensuring your business meets all filing requirements and deadlines without unnecessary stress.

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Quarterly Estimated Tax Calculations

By calculating your quarterly estimated taxes, we help you stay ahead of obligations and prevent penalties that can cut into your profits.

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Sales and Payroll Tax Filings

We take the complexity out of sales and payroll tax compliance, handling filings on your behalf so your business remains in good standing with tax authorities.

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Depreciation Schedules and Bookkeeping Integration

We connect your tax filings with your bookkeeping records and create detailed depreciation schedules, ensuring every eligible deduction is captured.

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Credits and Incentives for North Dakota Businesses

Our team helps you identify state-specific tax credits and business incentives, giving you opportunities to reduce your tax liability and reinvest in growth.

Strategic Tax Planning for Your Business

Tax planning doesn’t end in April. We advise throughout the year so your business is ready for whatever comes next. Our services include entity structure reviews, year-end strategies, and ongoing consulting to help you keep more of your hard-earned profits. If an S-Corp election could reduce self-employment taxes, or a retirement plan contribution could lower your liability, we’ll walk you through the best options for your situation.

Compliance and Peace of Mind

Deadlines come fast—March 15 for partnerships and S-Corps, April 15 for C-Corps—and missing them can be costly. With Goodhart & Associates PC, you never need to worry. We track every due date, file extensions when necessary, and stand behind the returns we prepare. If the IRS or the North Dakota Tax Commissioner has questions, we respond on your behalf so you can stay focused on your business.

North Dakota Tax Expertise

As a local CPA firm, we understand North Dakota’s business tax requirements inside and out. From state corporate filings to rules that affect farmers, contractors, and professional service providers, our advice is grounded in the realities of the Mandan–Bismarck business community. We also assist clients who operate across state lines, ensuring that every filing is done right the first time.

Integrated Support With Bookkeeping & Payroll

Tax preparation works best when it’s built on accurate records. For clients using our bookkeeping and payroll services, your numbers flow seamlessly into your tax return. That means fewer surprises, fewer adjustments, and more time for planning ahead. If you already work with another bookkeeper, we’ll collaborate with them to keep your filings on track.

Common Questions About Business Tax

  • My business is a single-member LLC; do I need a separate business tax return?

    Usually, no—you’ll file a Schedule C on your personal return. But if you elect S-Corp status, you’ll need a separate Form 1120S. We help you decide what works best.

  • What’s the deadline for S-Corp or partnership returns?

    March 15 each year. C-Corp returns are due April 15. We file on time or request extensions so you’re never caught off guard.

  • Can you handle both business and personal taxes?

    Yes. Many clients prefer it since pass-through business income affects their personal taxes. Handling both ensures complete planning.

  • I’m behind on payroll or sales tax filings—can you help?

    Absolutely. We prepare and file past-due returns and negotiate penalties when possible. Acting quickly can reduce risk and stress.

  • How can my business save on taxes?

    From choosing the right entity to maximizing deductions for vehicles, equipment, or retirement contributions, we tailor strategies to your industry and goals.