Guide

Cash flow: why steady money coming in matters

Selling is a game of averages. Some days you make nothing. Some days you make a big part of the month. This guide explains why the timing of your money matters, and why having more than one source of income can give you room to breathe.

General information only, not financial, legal or tax advice. I am not a lawyer, a CPA or an accountant. Flipfiled does not prepare tax returns or give financial advice. This page shares facts and the sources for them. What is right for you depends on your own situation, so talk to a CPA, an insurance agent or a lawyer before you decide.

The short version

• Cash flow is the money coming in and going out of your hands over time. It is about when money moves, not only how much.
• Resale income is lumpy. A slow week and a big week can both happen in the same month.
• Bills are not lumpy. Rent, phone and insurance come due on set dates, no matter what you sold.
• For your own survival, the total that comes in matters, not where it comes from. It can be resale sales, a paycheck, or both.
• A job can also come with benefits you would otherwise pay for yourself, such as health insurance, paid time off and a retirement plan. Know what yours gives you before you decide to give it up.

What cash flow means

Cash flow is simple. Money in minus money out, over a period of time. See cash flow in the glossary.

Cash flow is not the same as profit. Here is why. You buy a $100 item on Monday. You sell it for $180 on Friday of the next week. Your profit is $80, but for those days you were $100 down. If you buy ten items before you sell any, you can be short on cash even though every one of them will be a good sale.

The SBA (the U.S. Small Business Administration) says the cash method of accounting “shows cash flow clearly,” and that a balance sheet can help with cash flow projections for future years. It also warns that paying cash for assets and equipment leaves you with less cash to cover operating expenses. Source: SBA, Manage your finances (opens in a new tab).

Selling is a game of averages

A month is a better scoreboard than a day. At the end of the month you add up everything that came in and everything that went out. That total is what shows how the business is doing. A bad Tuesday does not mean much by itself. A big Saturday does not either.

You can use your own records to see this. See recordkeeping for resellers and business expenses for what to track.

An example month

This is an invented example, not a forecast. It uses simple numbers so you can see the pattern. It leaves out taxes.

• You start the month with $800 in the bank.
• Your resale sales arrive unevenly: $0, $120, $1,050 and $230 in weeks 1 to 4. That adds up to $1,400.
• You spend $300, $150, $250 and $200 on inventory, fees and shipping in those weeks. That adds up to $900. So your resale profit for the month is $500.
• Your personal bills are $800 in week 1 (rent) and $400 in week 3. That adds up to $1,200.
• In the second column, you also have a part-time job that pays $400 take-home a week.

What this shows: The resale profit is $500 in both columns. The business did the same thing. The difference is timing. With resale alone, rent is due in week 1, before the big sales week, and the account goes below zero. In real life that can mean a late fee, an overdraft, or a credit card balance. With the job, money arrives every week, so the dip does not happen. The total at the end of the month also differs by the job’s pay, $1,600.

More than one source of money

When you have two ways of earning money, a problem with one is less likely to stop everything. A slow selling month, a platform changing its fees, or a sourcing trip that does not pay off hits only one of the two.

You may see online advice that says you need five or six income streams. That is not a rule. Most people do not have that kind of time. Two sources, such as a job and a resale business, are enough to make a real difference.

Two more simple facts:

• Working more hours earns more money, if the hours are paid. That is true of both a job and a business.
• A job (W-2 work) and self-employment are two separate ways for money to come in. They are taxed in different ways. See estimated taxes and self-employment tax.

What a job may give you besides a paycheck

Many employers offer benefits. The U.S. Bureau of Labor Statistics measured how many private-sector workers have access to certain benefits in March 2026:

“Access” means the employer offers it. Not everyone who is offered a benefit uses it. For example, BLS counts 46% of these workers as taking part in a medical plan. Source: U.S. Bureau of Labor Statistics, Employee Benefits in the United States, March 2026 (opens in a new tab).

Your own job may be different. These questions can help you find out what you have:

• Does my employer offer health insurance? How much comes out of my pay for it?
• Does it cover my family?
• Is there a retirement plan, and does my employer add money to it?
• How much paid time off or sick leave do I get?
• Is there disability or life insurance?

Your HR department or benefits handbook can answer these.

Health insurance if you work for yourself

If you are self-employed, there is no employer plan unless you have one through a job, a spouse or a parent. Here is what the official sources say.

• Get Covered Illinois is the state’s health insurance marketplace. It says freelancers, consultants, independent contractors and similar workers can enroll. You estimate your net self-employment income for the coverage year, and any financial help is based on that estimate. If your income is hard to predict, you can use your best estimate and update it when it changes. Source: Get Covered Illinois, coverage for self-employed individuals (opens in a new tab).
• Losing job-based coverage is one of the life events that opens a special enrollment period. You generally have 60 days from the event to enroll. Source: Get Covered Illinois, life changes and special enrollment (opens in a new tab). Open enrollment dates change each year, so check the site for the current dates.
• Tax deduction: The IRS says you can take the self-employed health insurance deduction if you were self-employed and had a net profit on Schedule C, and the plan is set up under your business. The deduction does not apply to any month you were eligible for a plan subsidized by an employer, even if you did not enroll. That includes your job’s plan. The deduction is reported on Schedule 1 (Form 1040), line 17, and it does not lower your self-employment tax. The details are on Form 7206 and its instructions. Source: IRS, Instructions for Form 7206 (opens in a new tab).

The deduction rules are tax rules, so a CPA or enrolled agent is the right person to ask how they apply to you. Flipfiled does not prepare tax returns or give tax advice.

Other things that change

• Retirement: The IRS lists plans that self-employed people can use, including a SEP IRA, a SIMPLE IRA, a one-person 401(k) (sometimes called a solo 401(k)), profit-sharing plans and others. A SEP lets you contribute as much as 25% of your net earnings from self-employment, according to the IRS page. Source: IRS, Retirement plans for self-employed people (opens in a new tab). See also Roth IRA and starting a business.
• Social Security credits: You earn credits from work. In 2026, $1,890 of earnings gives you one credit, up to four credits a year, and most people need 40 credits to qualify for retirement benefits. Self-employed people pay Social Security and Medicare tax themselves, 12.4% and 2.9% in 2026. Source: Social Security Administration, 2026 Update (opens in a new tab).
• Unemployment benefits: IDES says that if you get a 1099 you may be eligible for regular unemployment insurance, but IDES must decide whether the work is covered under Illinois law. Source: IDES, FAQs for claimants (opens in a new tab). Ask IDES about your own case.
• Insurance for the business: A job does not cover your inventory or your sales. See insurance for resellers.

Where to get free help in Chicago

The City of Chicago’s Department of Business Affairs and Consumer Protection (BACP) funds a network of more than 70 nonprofit Neighborhood Business Development Centers. The City says they offer no-cost help, including confidential counseling, business plan help, help connecting to financing, and professional development workshops. Each center has its own focus, so services can vary. Source: City of Chicago, Neighborhood Business Development Centers (opens in a new tab).

The Illinois Department of Commerce says Small Business Development Centers across the state provide confidential business guidance and training. Source: Illinois DCEO, Small Business Assistance (opens in a new tab).

A simple way to track it

1. Write down your fixed bills and the dates they are due.
2. Write down when your paychecks and your resale payouts usually arrive.
3. At the end of each month, add up everything in and everything out.
4. Keep records. They help with taxes and with seeing the pattern. See recordkeeping.

Sources

• U.S. Bureau of Labor Statistics, Employee Benefits in the United States, March 2026 (opens in a new tab)
• SBA, Manage your finances (opens in a new tab)
• Get Covered Illinois, coverage for self-employed individuals (opens in a new tab)
• Get Covered Illinois, life changes and special enrollment (opens in a new tab)
• IRS, Instructions for Form 7206 (opens in a new tab)
• IRS, Retirement plans for self-employed people (opens in a new tab)
• Social Security Administration, 2026 Update (opens in a new tab)
• IDES, FAQs for claimants (opens in a new tab)
• City of Chicago, Neighborhood Business Development Centers (opens in a new tab)
• Illinois DCEO, Small Business Assistance (opens in a new tab)

I am not a lawyer or a CPA

This page is general information, not financial, tax, legal or insurance advice. I am not a lawyer, a CPA or an accountant. The example month is invented. Benefits, rules and numbers change, so check the sources and talk to a professional about your own situation. Checked Oct 30, 2026.