By Addison Parker – Partner at Fortis Accounting Solutions
Most small business owners think internal controls are something only big companies need to worry about. They picture complicated policies, multiple layers of approval, and someone watching over every transaction. In reality, simple internal controls are one of the smartest things you can put in place once your business starts to grow beyond the solo stage.
At Fortis Accounting Solutions, we regularly see owners discover too late that small gaps in their processes have cost them time, money, or peace of mind. Here are some of the most common mistakes we see and the straightforward ways to fix them before they become expensive problems.
What Most Owners Get Wrong
Everything runs through one person. Many owners still handle invoicing, bill payments, bank logins, and payroll themselves. When the business is small this feels efficient. Once you have employees or subcontractors, it creates real risk. One honest mistake or one dishonest person can go unnoticed for months.
No separation between personal and business spending. Using the same credit card or bank account for both makes it almost impossible to keep clean records. Even innocent mixing creates headaches during reviews, loans, or tax time.
Weak approval processes for expenses. Employees or contractors buying supplies without any review can lead to unnecessary spending or duplicate purchases. We have seen marketing budgets quietly double because no one was checking receipts against approved budgets.
No regular review of bank and credit card activity. Owners often assume their bookkeeper will catch everything. But without a second set of eyes on transactions each month, small errors or unusual charges can slip through.
Poor password and access management. Sharing logins or using the same password across multiple accounts is still surprisingly common. In 2026, with rising cyber threats, this is an unnecessary risk.
Simple Internal Controls That Actually Work for Small Businesses
You do not need heavy bureaucracy. These practical steps make a big difference:
- Give your bookkeeper their own view-only or limited access to bank feeds so they can reconcile without full login rights.
- Set up a simple approval process for any expense over a certain amount (even $500 or $1,000 can work).
- Require receipts for every business purchase and attach them directly in your accounting software.
- Review a short monthly summary that shows large transactions, new vendors, and any unusual items.
- Keep personal and business finances completely separate by using dedicated business accounts and cards for corporate purchases.
- Change passwords regularly and use two-factor authentication on all financial accounts.
Picture how this plays out in practice. Imagine a regional fitness studio chain with five locations across Pierce and Thurston counties, generating roughly $4 million a year and employing dozens of trainers and front-desk staff. Before putting controls in place, location managers could sign into the company credit card and make purchases without oversight. After adding a simple approval threshold and a monthly review process, the owner caught two duplicate software subscriptions running across multiple locations and an unauthorized series of meal expenses within the first 60 days. The savings more than covered the cost of professional bookkeeping support for the entire year.
The best part about good internal controls is that they do not slow you down. Once they are in place, they run quietly in the background. You spend less time thinking “Did I miss something?” and more time focusing on growth, clients, and the work you enjoy.
Strong controls also make your business more attractive if you ever want to bring in investors, apply for financing, or eventually sell. Clean, well-controlled financials tell the outside world that your company is professionally run and lower risk.
If your business has grown to the point where you have employees, multiple bank accounts, or regular vendor payments, it is worth taking a fresh look at your internal processes. Even a few small improvements can protect the business you have worked so hard to build.
Outsourced Accounting for Growing Businesses
Our mission is to equip business owners and decision-makers with the information that they need to make great decisions for themselves and their employees. As fellow small business owners, we know how busy things can be and how helpful it is to be able to feel confident in your finances when making important decisions.
Don’t navigate the complexities of small business accounting alone. Join the successful business owners who trust Fortis Accounting Solutions for expert guidance and precision bookkeeping.
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