Module 01 of 09
Setting up your finances
The financial infrastructure you build in the first weeks of your business shapes everything that follows — your tax liability, your legal protection, your ability to get a loan, and how clearly you can see whether the business is healthy. This module covers the four pillars every business needs in place before the first dollar moves.
The cardinal rule: separate everything
Nothing in small business finance matters more than this: your business money and your personal money must never mix. Not "until I get set up properly." Not "just for this one payment." Never.
When personal and business money mix, three things go wrong. Your LLC's or corporation’s liability protection weakens — courts can hold you personally responsible for business debts when you treat the business like a personal account. Your taxes become a nightmare to reconstruct. And you lose the ability to see clearly whether the business is actually profitable.
MOST COMMON MISTAKE
Using a personal bank account "temporarily" while waiting to open a business account. There is no good temporary period. Open the business account before the first transaction.
In this Module
The cardinal rule
The four pillars
Choosing a bank
The tax reserve habit
Setup checklist
Real examples
Related Modules
Bookkeeping basics
Small business taxes
Cash flow
The four financial pillars
Every business needs these four things in place from day one. They're not optional for any business type — retail, service, market vendor, or trades.
Business checking account
All business income flows in here. All business expenses flow out. Nothing personal touches it.
Bookkeeping system
A way to record every transaction — software, spreadsheet, or notebook. Simple and consistent beats elaborate and ignored.
Business debit or
credit card
Every business purchase goes on this card — supplies, fuel, software, advertising. Never your personal card.
Tax reserve account
A separate savings account where 25–30% of every payment goes. Prevents the quarterly tax bill from becoming a crisis.
Chosing a bank account — compare your options
Not all business checking accounts are equal. The right choice depends on how you handle cash, how many transactions you run, and whether you want relationship banking or low fees.
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Traditional bank (Chase, Wells Fargo, Bank of America, local bank)
In-person branches, teller service, cash deposits over the counter, and established relationships that can help with loans down the road. The most common choice for businesses that handle physical cash.
+ Branch access for cash deposits
+ Business relationship for future lending
+ Full range of services (wire transfers, merchant services)
- Monthly maintenance fees ($15–$30) unless minimums are met
- Lower interest on deposits
- Sometimes more paperwork to open
What to look for when opening
No monthly fees (or a minimum balance you can reliably meet), free ACH transfers, a debit card, and online bill pay. Bring your EIN and LLC/corporationon formation documents — most banks require both to open a business account.
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Online bank (Relay, Mercury, Bluevine, Found)
No monthly fees, higher interest on balances, and excellent software integrations with QuickBooks, Wave, and other bookkeeping tools. Best for businesses that don't handle much cash and are comfortable managing everything digitally.
+ No monthly fees
+ Strong bookkeeping software integrations
+ Higher APY on deposits
+ Fast online account opening
- No branch access — cash deposits are difficult or impossible
- Weaker relationship for future lending
- Limited cash-handling features
What to look for when opening
No monthly fees (or a minimum balance you can reliably meet), free ACH transfers, a debit card, and online bill pay. Bring your EIN and LLC formation documents — most banks require both to open a business account.
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Credit union (local or regional)
Member-owned institutions that often offer lower fees, better loan rates, and more personalized service than large banks. A strong option if there's a business-friendly credit union in your area — especially for trades and service businesses in smaller towns.
+ Lower fees than traditional banks
+ Better loan rates when you're ready to borrow
+ Local relationship and community ties
- Membership requirements vary
- Fewer tech features than online banks
- Branch network may be limited
What to look for when opening
No monthly fees (or a minimum balance you can reliably meet), free ACH transfers, a debit card, and online bill pay. Bring your EIN and LLC formation documents — most banks require both to open a business account.
The Tax reserve — the habit that prevents crises
Self-employed business owners don't have taxes withheld from each payment the way employees do. Instead, you owe estimated taxes quarterly and the full amount at year end. Most first-year business owners are blindsided by this.
The solution is simple: open a second business savings account and move 25–30% of every payment you receive into it immediately — before you spend anything. Treat it as money you don't have. When quarterly tax payments come due (April, June, September, January), the money is already there.
THE RULE OF THUMB
25% for lower income years, 30% once your profit exceeds $60,000. Self-employment tax alone is 15.3% — that's before federal income tax. The reserve catches both. See the Small Business Taxes module for a full breakdown of what you owe and when.
Financial setup checklist
Track your progress through the core setup steps.
Open a dedicated business checking account
Get a business debit or credit card linked to the account
Open a separate savings account for tax reserves
Set up bookkeeping software or a tracking spreadsheet
Transfer any existing business transactions out of personal accounts
Set a recurring reminder to move 25–30% of each payment to tax reserve
Add quarterly estimated tax due dates to your calendar
Connect bank account to bookkeeping software (if using)
Real-world examples
A new cleaning business owner kept all her income in her personal account for the first three months. By the time she filed her first tax return, she owed $4,200 she hadn't set aside — and spent the next year catching up. She now runs three separate accounts: checking for business income, savings for taxes, and a third for equipment replacement.
A landscaper starting out opened a business checking account at his local credit union the day he formed his LLC. He chose it because they had a branch two minutes from the hardware store where he buys supplies. Three years later, they approved his equipment loan based on that established relationship.
A farmers market vendor uses Relay (online bank) with no monthly fees and automatic percentage-based savings rules that move 28% of every deposit into her tax reserve automatically — she never has to think about it.