A+ Payroll & Bookkeeping Services
Small Business Bookkeeping & Payroll Services in St. Louis
About Us
Trusted Bookkeeping and Payroll Provider for Missouri Small Businesses
Small business owners spend an average of 5 hours per pay period on payroll tasks alone. A+ Payroll & Bookkeeping handles these time-consuming responsibilities so you can focus on running your business. Our St. Louis bookkeeping services include financial record management, bank reconciliation, and tax preparation support. For businesses that need payroll processing in St. Louis, we handle paychecks, withhold taxes, file quarterly returns, and prepare year-end W-2s. Many clients also benefit from our combined payroll and bookkeeping services for complete financial management. Every client receives direct access to Mary Williams, our founder with more than two decades of hands-on experience serving Missouri businesses.









Get Your Books and Payroll Under Control
Stop spending hours on financial tasks that take you away from your business. Schedule a free consultation today to discuss your bookkeeping and payroll needs with our team.
Our services
Bookkeeping and Payroll Solutions for St. Louis Area Businesses
Payroll processing through A+ Payroll & Bookkeeping includes preparing paychecks according to your payment schedule, withholding federal and state taxes, processing benefit deductions, and handling direct deposit for your employees. We submit payroll taxes to government agencies on your behalf and prepare all required filings, including Forms 941, Form 940, W-2s, and state unemployment reports. As a member of the American Payroll Association, we stay current with changing tax regulations and compliance requirements. Studies show that 40% of small businesses pay payroll penalties each year, our small business payroll services help you avoid these costly mistakes and stay compliant with federal and state requirements.
Our bookkeeping services in St. Louis cover data entry for checks, deposits, and credit card transactions for your business. We record fixed assets and loans, reconcile bank and credit card statements, and prepare your books for tax season. Year-end 1099 preparation for subcontractors and monthly or quarterly sales tax returns are also included. Businesses looking to outsource their bookkeeping save an average of 10-15 hours per month on administrative work.
Our Mission Is To Provide Reliable & Affordable Financial Services To Small Businesses in the St. Louis & Metro Areas
testimonial
Clients Feedback & Reviews
Posted on Google Colin O'BrienTrustindex verifies that the original source of the review is Google. Been doing my payroll for a few years now. Is prompt and precise. Never had a mistake or any issue. And always ready to answer questions I have!Posted on Google Steve StillmanTrustindex verifies that the original source of the review is Google. I've been working with Mary for 10+ years and I highly recommend her bookkeeping skills! She is trustworthy, professional and very flexible with my slow responsiveness getting her my financial data. Mary deserves a 10 star review!Posted on Google Angie ForresterTrustindex verifies that the original source of the review is Google. Payroll done super fast & professionally, w2's, quarterly payroll taxes, etc everything is handled and I don't have to worry about it which is wonderful! peace of mind :) When I first started I tried doing it myself and I quickly learned it's not my forte. Highly recommend 👍 thank you A+PB you're awesome!!!Posted on Google Eric RattereeTrustindex verifies that the original source of the review is Google. Mary does an awesome job doing our payroll for both of our companies! Thank Mary!Posted on Google Savanaha RattereeTrustindex verifies that the original source of the review is Google. Ms. Mary has been a huge help getting me started with my food truck payroll and taxes. Thank you Ms. Mary I will 1000% percent recommend you!!Posted on Google Patricia JohnstonTrustindex verifies that the original source of the review is Google. Does a great job with payroll. Always very nice and helpful. Muttleys Pub recommends A+ Payroll & Bookkeeping, LLC!!!Posted on Google Lexie BergerTrustindex verifies that the original source of the review is Google. Our small business has been working with A+ Payroll & Bookkeeping, and we recommend working with them. Mary is very prompt and responds quickly, which is very beneficial in our line of work!Posted on Google Connie ColeTrustindex verifies that the original source of the review is Google. This company is small enough to be very personal and large and knowledgeable to be very professional - perfection alway connie colePosted on Google amy morioTrustindex verifies that the original source of the review is Google. We work with A+ Payroll and Bookkeeping for our small business needs and have been very pleased. Their timeliness, accuracy and communication are always exceptional. They make life much easier for us. I would highly recommend them.Posted on Google Ricky MartinezTrustindex verifies that the original source of the review is Google. Mary is very thorough and prompt. She is trustworthy and responds to all text messages, which makes communication easier. I would recommend her to anyone looking for payroll services. Sincerely, Dream Decks
Our Process: Simple Financial Solutions in Three Steps
Getting started with A+ Payroll & Bookkeeping is straightforward. We make bookkeeping and payroll management easy for St. Louis small business owners.
Schedule a call to discuss your business needs and how we are available can help streamline your payroll and bookkeeping processes.
Select the payroll and bookkeeping services that fit your small business, and we will create a plan based on your specific requirements.
Once we finalize your plan, we handle everything so you can focus on growing your business while we manage the financial details.
Take Control of Your Business Finances Today!
Why Choose A+ Payroll & Bookkeeping Services
Your Local Partner for Small Business Financial Services in Missouri
A+ Payroll & Bookkeeping serves small businesses across St. Louis and St. Charles County with reliable bookkeeping, payroll processing, and tax compliance support. Contractors and tradespeople also rely on our services for industry-specific financial management. Here are four reasons local businesses choose to work with us:
Two decades of payroll and bookkeeping work for Missouri small businesses. Proven systems and processes that reduce errors and save you valuable time every pay period.
Direct communication with our team through text, email, or phone. We respond quickly to your questions and work around your schedule to meet your deadlines.
Affordable rates for small business payroll and bookkeeping services in the STL area. No hidden fees or surprise charges. Our services scale with your business size and needs.
Based in St. Charles County, we know Missouri tax requirements, state withholding rules, and local business regulations. We serve clients throughout the St. Louis Metro area.
