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These Are the Top Tax Filing Mistakes Made by Small Business Owners (and How to Avoid Them) Avoiding these common tax filing errors can save your business time and money in the long run.

By Anthony Cavaluzzi Edited by Kara McIntyre

Opinions expressed by Entrepreneur contributors are their own.

The wrong tax filing mistake could lead to an IRS audit, which amounts to quite an ordeal for a small business owner. In addition to the lost time and productivity trying to answer the demands of the IRS, overpaying and other mistakes will impact your company's bottom line.

Though these filing mistakes might seem like decisions that are completely out of character for you or your staff, the tax filing process grows more complicated as your business expands.

There are several common mistakes businesses make on their taxes, which can be avoided if you and your staff take note of the rules and ensure you are up to date with any IRS changes.

Related: First-Time Business Owners: A Brief Guide to Tax Filings

1. Inaccurate reporting

It doesn't matter whether your reporting error is accidental or intentional, misreporting your income to the IRS (both personally and as a business owner) leads to scrutiny. Virtual currency must be reported as well as any investment income and non-employee compensation.

The IRS uses its computers and 1099 forms to match what has been reported to them with what has been reported to you as a business owner, so it is essential that you pick up the information correctly. Income may be reported to you on information returns, such as the 1099-MISC form showing nonemployee compensation if you are an independent contractor, or the 1099-K form showing credit card and certain other transactions, regardless of your entity type if you have a certain amount of transactions.

If the forms are wrong and you can't get the sender to correct them, report the wrong amount with a proper adjustment and attach an explanation to your return so you are only taxed on the correct amount.

Related: New IRS 1099 Rule for PayPal and Venmo Targets Very Small Businesses and Will Cause Misreporting and Errors

2. Meal expense deductions

It's a minor thing, but trying to claim 100% of meal expenses when working with clients is a problem. Client entertainment allowances have changed, and continually attempting to skirt this truth could prompt IRS involvement. Only 50% of certain business meals are deductible. Although treating a client to a meal to win them over or paying for your own meals on a business trip is a legitimate business expense, you can only deduct half of the cost.

3. Tax preparation procrastination

One way to make tax preparation much easier is to make sure your records are well kept. Actively documenting expenses and deductions requires a proper recordkeeping process. You must be proactive! It is recommended to use a digital accounting tool to help you and your staff keep track. The tool should be able to auto-fill expenses from uploaded images and store data in the cloud may be very helpful.

When you have access to a tax consultant, you shouldn't wait until tax season to figure out what to do about filing and record keeping. By working on tax planning with expert help and making sure records are kept and paperwork processed throughout the year, it can avoid some of the tiny mistakes that could cause an audit. It can also help prevent a shockingly high tax bill that you aren't prepared for. If you miss the tax filing deadline, your business will be assessed a 5% per month penalty by the IRS that will continue to increase until the return is filed.

Related: A Year-End Tax Checklist

4. Ignoring mileage records

The tax laws allow for business owners to claim mileage when using a personal vehicle for business purposes. However, this deduction must be supported by accurate records.

Keeping an electronic log or a notebook in the vehicle to write down the date and mileage are ways to support your mileage claims. Mileage deductions are a common area of confusion. Make sure you understand the per-mile rate you can deduct and any exceptions that may apply to that rate. Also, it's important to note the maximum current allowable mileage deduction for the year for all vehicle types so you don't exceed it. This amount could change from one year to the next.

5. Lowballing estimated taxes

Many business owners postpone or dread the quarterly payments of large checks to the IRS. These large payments cut into a business's cash flow and may not be properly planned at the outset when budgeting. But lowballing estimated taxes can lead to paying penalties (20%) if you pay less than what you owe or pay late. It's best to accurately assess your estimated taxes for the year and pay each quarter on time.

All of the estimated taxes your business needs to pay, including self-employment tax and Medicare tax, should be carefully and accurately totaled. If there are omissions and the IRS considers this misleading, you could end up being fined for intentional fraud or even face tax fraud allegations.

Related: Will I Be Penalized for Paying a Now Underestimated Tax Payment?

6. Use the wrong retirement plan

Small business owners can use their retirement plan contributions to reduce their tax liabilities. However, choosing the wrong plan could actually limit the deductions you can take or require you to pay for employee contributions that your company can't really afford.

Professional help with your small business development and tax preparation can also help you avoid making some of these costly mistakes. To find out what other tax issues could cost your business money, consider speaking to a tax consultant.

Anthony Cavaluzzi

CEO at Profit Management Solutions, LLC

Anthony Cavaluzzi provides business-process management and tax-consulting solutions as founder and CEO at Profit Management Solutions, LLC, a client-focused consultancy based in Elgin, Illinois. Cavaluzzi empowers businesses with the expertise to maximize profitability and operational success.

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