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Starting a New Business? Avoid These Common Tax Mistakes

Jun 15
3 min read
New Business Common Tax Mistakes

Starting a business is exciting, but many new business owners overlook important tax and financial considerations during the early stages. Unfortunately, mistakes made during the first year can create unnecessary taxes, penalties, bookkeeping challenges, and cash flow problems later. Here are some of the most common tax mistakes new business owners make and how to avoid them.


Failing to Separate Business and Personal Finances

One of the first steps every business owner should take is opening a dedicated business bank account. Mixing personal and business expenses can create confusion, make tax preparation more difficult, and increase the risk of missing deductions. Keeping finances separate also helps establish better financial records and makes ongoing Bookkeeping & Accounting significantly easier.


Choosing the Wrong Business Entity

Many new businesses begin as sole proprietorships by default. While this may be appropriate initially, it isn't always the best long-term solution. Depending on your income, business activities, and future goals, an LLC, partnership, or S corporation may provide advantages.


Entity selection can impact liability protection, tax treatment, payroll requirements, and future planning opportunities. Seeking guidance during the startup phase can help avoid costly changes later.


Ignoring Estimated Tax Payments

Unlike traditional employees, business owners typically do not have taxes automatically withheld from their income. As a result, many new business owners are surprised when they receive a large tax bill at year-end. Estimated tax payments may be required throughout the year to avoid penalties and interest. Proactive Tax Strategy & Planning can help determine whether estimated payments are necessary and how much should be set aside.


Poor Recordkeeping

Waiting until tax season to organize receipts, expenses, and financial records often creates unnecessary stress. Good recordkeeping helps:

  • Support deductions

  • Improve financial reporting

  • Simplify tax preparation

  • Reduce audit risk


Implementing a consistent system early can save significant time and money as the business grows.


Missing Legitimate Business Deductions

Many new business owners either overlook deductible expenses or avoid claiming them because they are unsure of the rules. Common deductible expenses may include:

  • Business insurance

  • Software subscriptions

  • Professional fees

  • Marketing expenses

  • Office supplies

  • Business travel

  • Continuing education


Maintaining accurate records and working with a professional can help ensure deductions are properly documented and reported.


Waiting Too Long to Seek Professional Advice

Many business owners attempt to manage taxes entirely on their own during the early years.

While this may seem cost-effective, mistakes often become more expensive to correct later.

Professional guidance can help with:

  • Entity selection

  • Tax compliance

  • Estimated taxes

  • Payroll requirements

  • Financial reporting

  • Growth planning


Combining proactive planning with ongoing Business Tax Preparation services often helps business owners avoid issues before they become costly problems.


How Groundwork Tax & Accounting Can Help

At Groundwork Tax & Accounting, we help entrepreneurs navigate the financial and tax challenges that come with starting and growing a business. From business formation and tax planning to bookkeeping and tax preparation, we provide practical guidance designed to help business owners make informed decisions and stay compliant.


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Frequently Asked Questions

Do I need an LLC to start a business?

Not necessarily. Many businesses begin as sole proprietorships, though an LLC may provide liability protection and additional planning opportunities.


When should I open a business bank account?

Ideally, immediately after forming your business. Separating finances from the beginning helps simplify bookkeeping and tax reporting.


Do new businesses need to make estimated tax payments?

Many do. Requirements depend on income levels and tax liability.


When should I hire a tax professional?

The earlier, the better. Professional guidance can help prevent mistakes and establish good financial practices from the start.


Can I deduct startup expenses?

In many cases, yes. Certain startup and organizational expenses may be deductible or amortized depending on the circumstances.

 
 
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Groundwork Tax & Accounting provides tax preparation, bookkeeping, and tax planning services for individuals and small businesses. We help clients stay compliant, keep their finances organized, and move forward with clarity.

​Contact Us

Phone: 602-341-5115

Email: ahamdan@groundworktax.com

Phoenix, AZ 85018

Small Business Services

Based in Phoenix, AZ, we work with clients locally and virtually across the U.S.

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