John J Griffin, CPA, P.C.

John J Griffin, CPA, P.C. Certified Public Accountant in Chicago, IL, serving businesses & individuals. Tax Preparation | Tax Planning | Payroll | More

My services encompass nearly every aspect of financial life. I am experienced in all matters of accounting and taxation, IRS problem resolution, estates and trusts, business formation, real estate and business sales.

As a business owner, the last thing you need to do on a weekly or even daily basis is deal with spreadsheets—you’re busy...
06/01/2026

As a business owner, the last thing you need to do on a weekly or even daily basis is deal with spreadsheets—you’re busy enough as it is.

With the help of John J Griffin CPA P.C., we simplify all things accounting, allowing you to spend more time planning, strategizing, and enjoying running your business. Break up with the spreadsheets for good and start using reliable, accurate data to make well-informed decisions. Contact us today!

At John J Griffin CPA P.C., we specialize in expert tax preparation, ensuring your returns are complete, accurate, and c...
05/25/2026

At John J Griffin CPA P.C., we specialize in expert tax preparation, ensuring your returns are complete, accurate, and compliant. With years of experience organizing financial records, calculating income and deductions, and learning the complexities of ever-changing tax laws, our Chicago tax preparation services give you peace of mind and maximize your refund potential.

☎️Contact our experts today to learn more!

At John J Griffin CPA P.C., we offer expert bookkeeping services in Chicago designed to give you reports that help you m...
05/18/2026

At John J Griffin CPA P.C., we offer expert bookkeeping services in Chicago designed to give you reports that help you make confident, informed financial decisions. With our dependable support, you can achieve your business goals more easily, smarter, and faster. Contact us to learn more!

Are you claiming the deductions you deserve? If you own your own business, you might want to consider these five deducti...
05/11/2026

Are you claiming the deductions you deserve?

If you own your own business, you might want to consider these five deductions that could save you thousands.

1. Home Office Deduction: If you run your business from your residence, you can deduct a portion of your rent, mortgage interest, utilities, internet, and more.
2. Vehicle and Mileage: If you use your car for business purposes, you can deduct exact expenses like gas, insurance, repairs, and depreciation or use the IRS standard mileage rate.
3. Business Meals: If you take clients or prospects out for meals, or travel for business reasons, you may be able to deduct up to 50%. It’s crucial, however, to keep records of the date, place, attendees, and purpose of each meal.
4. Equipment and Supplies: Purchases like computers, software, furniture, machinery, and more can often be fully deducted in the same year of the purchase.
5. Retirement Contributions: You can deduct contributions to your employees’ retirement plans, and even your own if you’re self-employed.

Need help figuring out which deductions you can claim for your business? Give John J Griffin CPA P.C. a call today ☎️

Which column do you resonate with the most? If the statements on the left seem more like your life lately, it might be t...
05/04/2026

Which column do you resonate with the most? If the statements on the left seem more like your life lately, it might be time to outsource your accounting needs to an expert like John J Griffin CPA P.C.. Our team is made up of expert accountants in Chicago, dedicated to helping you stay organized, relaxed, and focused on what truly matters.

Contact us today to take the first step toward making your numbers one less thing to stress about ☎️

Want to avoid a major headache at tax time? Start with this checklist!✅ Make sure your bank, credit card, and payment pr...
04/27/2026

Want to avoid a major headache at tax time? Start with this checklist!

✅ Make sure your bank, credit card, and payment processor statements match your books, and confirm that all income and expenses are recorded.
✅ Enter receipts, bills, and recurring charges into your accounting software, ensuring everything is labeled correctly for tax deductions.
✅ Check that all invoices have been sent and collected, and pay any outstanding vendor bills.
✅ Verify that payroll has been processed correctly and record payroll taxes, setting aside money for federal and state obligations.
✅ Based on this month’s profits, set money aside for your upcoming quarterly estimated taxes and adjust accordingly if your income is higher or lower than expected.

Sound like too much to add to your plate? Give John J Griffin CPA P.C. a call to get your taxes in order today 📲

If your books are messy and the numbers aren’t adding up, there’s a very common, potential red flag. They’re usually unc...
04/20/2026

If your books are messy and the numbers aren’t adding up, there’s a very common, potential red flag. They’re usually uncovered when something’s missing, mislabeled, or sent to the wrong account. At John J Griffin CPA P.C., the leading Certified Public Accountant in Chicago, we know how to find and correct this chaotic nuisance. The culprit? Uncategorized Transactions!

Did you make the right guess? Let us know in the comments👇

Tax credit: Tax credits reduce the amount taxpayers owe, dollar-for-dollar. Eligible taxpayers can reduce their tax bill...
04/13/2026

Tax credit: Tax credits reduce the amount taxpayers owe, dollar-for-dollar. Eligible taxpayers can reduce their tax bill and, in some cases, even increase their refund.

Exemption: Exemptions are amounts that can be reduced from taxable income that taxpayers can claim for themselves, their spouses, and dependents. Whether personal or dependency, exemption amounts are set by tax authorities and typically change each year.

Deduction: Deductions can be subtracted from gross income and ultimately reduce what you owe.

John J Griffin CPA P.C. offers comprehensive accounting services in Chicago to help you make sense of your numbers. From...
04/06/2026

John J Griffin CPA P.C. offers comprehensive accounting services in Chicago to help you make sense of your numbers. From recording financial transactions to analyzing, projecting, and forecasting, we help you reach your goals with data-backed insights and total confidence.

Contact us today to learn more 📲

Do you have a tax preparer yet? If the answer is no, you might want to give John J Griffin CPA P.C. a call. With our exp...
03/30/2026

Do you have a tax preparer yet? If the answer is no, you might want to give John J Griffin CPA P.C. a call. With our expert tax preparers in Chicago, you’ll approach tax season with clarity and peace of mind knowing your return is in good hands.

What we offer:
✅ Expert-level guidance on federal, state, and local tax codes
✅ Maximized deductions and potential for minimized tax liabilities
✅ More time to focus on what matters most

Contact us today to tackle your taxes with confidence 📲

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Chicago, IL

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm

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