Running a business means keeping track of more than sales, customers, and operations. Staying on top of tax deadlines is just as important—and missing one can result in unnecessary penalties, interest, and stress.
While your CPA prepares and files your taxes, maintaining accurate bookkeeping throughout the year makes it much easier to meet those deadlines.
At BD Bookkeeping, we help business owners throughout the Greater St. Louis area and the Southern Illinois region keep their financial records organized and tax-ready year-round. Here’s a look at the quarterly tax deadlines every small business owner should know.
Why Quarterly Tax Deadlines Matter
Unlike employees, many business owners don’t have taxes automatically withheld from their income.
Instead, business owners are often required to make estimated quarterly tax payments throughout the year.
These payments help cover federal income tax and, depending on your business structure, self-employment tax or other tax obligations.
Making timely payments helps you:
- Avoid penalties and interest
- Manage cash flow throughout the year
- Prevent a large tax bill at year-end
- Stay compliant with IRS requirements
The Four Quarterly Estimated Tax Deadlines
For most small businesses, estimated tax payments follow this schedule:
First Quarter
Due: April 15
Covers income earned from January 1 through March 31.
Second Quarter
Due: June 15
Covers income earned from April 1 through May 31.
Third Quarter
Due: September 15
Covers income earned from June 1 through August 31.
Fourth Quarter
Due: January 15 of the following year
Covers income earned from September 1 through December 31.
Important: If a due date falls on a weekend or federal holiday, the deadline is generally extended to the next business day. Your CPA can advise you on the exact filing dates each year.
Who Needs to Make Quarterly Payments?
Quarterly estimated taxes commonly apply to:
- Sole proprietors
- Independent contractors
- Self-employed professionals
- Single-member LLCs
- Partners in partnerships
- S Corporation shareholders in many situations
Because every business is different, your CPA can determine whether estimated payments apply to your specific tax situation.
Bookkeeping Makes Quarterly Taxes Easier
Calculating estimated tax payments requires accurate financial information.
Without current bookkeeping, it’s difficult to know:
- How much income you’ve earned
- What deductible expenses you’ve incurred
- Your current profitability
- How much cash is available
When your books are updated monthly, your CPA has reliable information to calculate your estimated tax payments more accurately.
Don’t Wait Until the Deadline
One of the biggest mistakes business owners make is waiting until a tax deadline is approaching before organizing their financial records.
This often leads to:
- Missing transactions
- Incomplete expense records
- Last-minute reconciliations
- Stress for both you and your CPA
Maintaining your books throughout the year eliminates the rush and allows you to focus on running your business.
Keep These Financial Records Organized
Good bookkeeping ensures important financial records are always available.
This includes:
- Bank statements
- Credit card statements
- Income records
- Vendor invoices
- Expense receipts
- Payroll records
- Loan documentation
Having these documents organized makes quarterly tax planning much more efficient.
Your CPA and Bookkeeper Make a Great Team
Many business owners assume bookkeeping and accounting are the same thing—but they play different roles.
At BD Bookkeeping, we focus on:
- Recording financial transactions
- Reconciling accounts
- Organizing financial records
- Preparing monthly financial reports
- Keeping your books current and accurate
Your CPA uses those records to:
- Prepare tax returns
- Calculate estimated tax payments
- Provide tax planning strategies
- Offer financial and business advice
When your bookkeeper and CPA work together, you benefit from accurate records and informed tax planning.
How BD Bookkeeping Helps Businesses Stay Tax-Ready
Our goal is to make tax season less stressful by maintaining organized financial records all year long.
Our bookkeeping services include:
- Monthly bookkeeping
- Bank reconciliations
- Accounts payable and receivable management
- Financial reporting
- Payroll support
- QuickBooks assistance
- Catch-up and cleanup bookkeeping
While we do not prepare tax returns or provide tax advice, we work with trusted CPA partners and help ensure your books are accurate, organized, and ready whenever tax deadlines arrive.
Serving Businesses Throughout the Greater St. Louis Region
BD Bookkeeping proudly serves small businesses throughout the Greater St. Louis region, including communities across Southern Illinois and Eastern Missouri.
We offer in-person bookkeeping services for businesses located within approximately 50 miles of Troy, Illinois, and virtual bookkeeping services for businesses throughout the Greater St. Louis metropolitan area and beyond.
Our service area includes communities such as:
Illinois
- Troy
- Edwardsville
- Glen Carbon
- Collinsville
- Maryville
- O’Fallon
- Fairview Heights
- Belleville
- Highland
- Waterloo
- Columbia
- Alton
- Bethalto
- Greenville
- Centralia
- Mt. Vernon
Missouri
- St. Louis
- Clayton
- Kirkwood
- Webster Groves
- Chesterfield
- Maryland Heights
- Creve Coeur
- St. Charles
- O’Fallon
- Wentzville
…and many surrounding communities throughout the Greater St. Louis metropolitan area.
Stay Ahead of Every Deadline
Quarterly tax deadlines don’t have to catch you off guard. With accurate bookkeeping and a trusted CPA, you can stay organized, avoid surprises, and make informed financial decisions throughout the year.
If you’re spending too much time trying to organize your books—or you’re worried your records aren’t ready for your CPA—BD Bookkeeping can help.
Contact us today for a free consultation and discover how professional bookkeeping can help you stay organized, prepared, and confident every quarter of the year.
