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We Help Yours Grow.


Welcome to Mierendorf and Co. P.C, a certified public accounting and small business advisory firm serving the Grand Rapids and greater West Michigan areas.

At Mierendorf and Co., our goal is to be proactive with our clients. Our team of knowledgeable and professional CPAs is here to help you and your business succeed.

From business and consulting services to tax preparation and reporting, our team is experienced in all phases of small business advisory services. At Mierendorf and Co., we focus on a team based service approach, allowing us to quickly identify problem areas, find solutions to your business challenges, and suggest strategies for growth and improved profitability.

We want to be part of your team because your success is our success! We encourage you to explore our site and learn firsthand how our team can assist your business now and in the future.

How Do The Recent Tax Cuts And Jobs Act Changes Affect You

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Alert: How to Find Out if an IRS Notice is a Scam

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Taxpayers should be aware that a fraudulent IRS notice is being circulated regarding the Form W-4 Employee's Withholding Allowance Certificate. It is always a good idea to verify that any contact from the IRS is legitimate. If you receive any notice or letter from the IRS, the notice or letter should contain an ID regarding the type of letter or notice. You can go to https://www.irs.gov/individuals/understanding-your-irs-notice-or-letter that directs you to the IRS website. You can type your ID number of the letter or notice in the search bar to make sure the letter or notice is legitimate. If the ID number does not produce results, contact the IRS at 1-800-829-1040 to report the issue.

2018 Mileage Rates

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The IRS has announced the 2018 standard mileage rates for vehicles. Beginning on January 1, the new rate for business miles will be 54.5 cents.

Medical mileage will be reduced to 17 cents per mile, compared to the 2016 rate of 19 cents per mile. Charitable mileage remains unchanged at 14 cents per mile.