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Lesson 7 of 7 — Capstone

Building Your First Schedule C Return

Sam arrived at 10 AM on a Thursday.

He had the manila folder from the first visit, but it was fuller now. He’d gone home after the last appointment and found more receipts. He’d pulled up his Cash App and written down every business transaction on a notepad. He’d emailed himself the Facebook ad receipt.

“I thought about what you said,” he told the preparer. “About the records. I did my best.”

She spread everything out on the desk. 1099-NEC from Sunrise Property. The Cash App printout. Fuel receipts from two gas stations. Dump fee receipts from the county transfer station. A receipt for work gloves and contractor bags. The Facebook ad confirmation. His phone bill from December.

“This is a good start,” she said. “Let’s build your return.”

Everything in Module 5 has been leading to this appointment. You’re going to walk through Sam’s complete return from greeting to closing — the intake questions, the income reconstruction, the expense review, the SE tax explanation, and the final numbers. When you finish this lesson, you should feel like you’ve sat next to an experienced preparer and done this yourself.

Step 1 — Greeting and Intake

The appointment starts with a conversation, not the keyboard. The goal of intake is to understand the full scope of the return before you enter a single number. You’re looking for: all income sources, all potential expense categories, any life changes, and any situations that might make this return complicated.

💬 The Intake Conversation
RM
Preparer
Good morning, Sam. Good to see you again. Before we dive in — any big changes in your life this year? Marriage, divorce, new kids, bought a home?
🛠️
Sam
No, same situation. Just me. Still renting.
RM
Preparer
Still running the junk removal business?
🛠️
Sam
Yeah, and I worked part-time at the warehouse again until August. Then I quit to focus on the business.
RM
Preparer
So we have W-2 income and Schedule C income. Any other income? Investments, rental property, anything like that?
🛠️
Sam
No. Just those two things.
RM
Preparer
Did you receive any marketplace health insurance subsidies?
🛠️
Sam
No, I’m on my mom’s plan.
RM
Preparer
Perfect. Let me see what you brought.
Step 2 — Reviewing the Documents

The preparer lays everything out and catalogs what exists before entering anything. This takes about three minutes and prevents missing something important.

💬 Document Review
RM
Preparer
I have your W-2 from the warehouse — let me set that aside, we’ll enter that first. Then I have your 1099-NEC from Sunrise Property for $8,400. And your Cash App printout. Let me look at this.
🛠️
Sam
I went through and circled the ones that are business.
RM
Preparer
Good. I count 34 transactions circled, totaling $11,340. Does that sound right to you?
🛠️
Sam
About right.
RM
Preparer
So total business income from Cash App: $11,340. Plus the 1099-NEC: $8,400. Any other income from the business? Checks? Zelle? Anything else?
🛠️
Sam
A couple checks. Maybe $800 total.
RM
Preparer
So gross business income is roughly $20,540. Let me write that down. Now let’s look at your expenses.
Step 3 — Building the Income Picture

Sam’s gross income comes from three sources: the 1099-NEC, Cash App payments, and checks. All three go on Schedule C as gross receipts. The 1099-NEC income is reported to the IRS — it must match. The Cash App and check income is self-reported.

💵 Sam’s Business Income — Complete Picture
1099-NEC from Sunrise Property$8,400
Cash App business transactions$11,340
Checks from private customers$800
Total gross receipts$20,540
✅ Quick Check
Sam's total gross income is $20,540. His total deductible expenses are $11,322. What is his net profit?
$9,218. That's $20,540 minus $11,322. This is the number Schedule C shows at the bottom — and the number that drives both income tax and self-employment tax.
Net profit = gross receipts minus deductible expenses. Every dollar of legitimate expense reduces this number.
Step 4 — Reviewing Expenses with the Client
💬 Going Through Every Expense Category
RM
Preparer
Let’s go through your expenses one category at a time. Starting with mileage. Do you have a log?
🛠️
Sam
No log. I know I drove a lot.
RM
Preparer
Okay — let’s reconstruct. You left the warehouse job in August and went full-time on the business. So you had 8 months of heavy driving. How many jobs in a typical week during the busy season?
🛠️
Sam
Maybe 15–20 jobs a week when it’s good.
RM
Preparer
Average miles per job including driving there, going to the dump, and coming back?
🛠️
Sam
I’d say 20 miles per job with the dump run.
RM
Preparer
20 miles × 17 jobs average × 35 weeks = about 11,900 miles. Plus part-time January through August at 8 jobs a week times 20 weeks — another 3,200. Call it 12,000 conservatively. At 70 cents, that’s $8,400. I’m noting in the file how we got there.
🛠️
Sam
I think it was more than that.
RM
Preparer
Probably. But without a log, I want to use a number we can explain and defend. Going forward — that Stride app. Download it tonight.
💬 Dump Fees and Equipment
RM
Preparer
Now dump fees. I have receipts here totaling $1,240. Are there any dump runs that didn’t get receipts?
🛠️
Sam
Probably a few. Maybe 10 more loads. The county station is $40 a load.
RM
Preparer
Ten loads at $40 is $400 additional. I’ll note that’s estimated. So dump fees: $1,640.
🛠️
Sam
That sounds right.
RM
Preparer
Equipment and supplies — I have a receipt for $178 in work gloves and contractor bags. Anything else?
🛠️
Sam
I bought ratchet straps for the trailer. $65. Didn’t bring that receipt.
RM
Preparer
Add it in. That’s clearly a business purchase. Supplies: $243.
💬 Advertising, Phone, and Miscellaneous
RM
Preparer
Facebook ads — I have the $45 confirmation. Any other advertising? Google, yard signs, business cards?
🛠️
Sam
I printed business cards. About $30 at FedEx.
RM
Preparer
Advertising: $75. Cell phone — what do you use your phone for mostly?
🛠️
Sam
Mostly business. Calls from customers, navigation to jobs, Cash App.
RM
Preparer
I’ll use 80% business use. What’s your monthly bill?
🛠️
Sam
About $65.
RM
Preparer
$65 times 12 is $780 annual. At 80% that’s $624 deductible. And the trailer hitch repair — $340 on the receipt?
🛠️
Sam
Yeah, the trailer is 100% for business.
RM
Preparer
Vehicle repairs and maintenance: $340.
Step 5 — Building the Schedule C
💵 Sam’s Complete Schedule C
INCOME
Gross receipts$20,540
EXPENSES
Car and truck (mileage: 12,000 × $0.70)$8,400
Dump fees (disposal costs)$1,640
Supplies and equipment$243
Advertising$75
Phone (80% of $780)$624
Repairs and maintenance (trailer hitch)$340
Total expenses$11,322
NET PROFIT$9,218
💬 Should I Form an LLC?
🛠️
Sam
Someone told me I should have an LLC. Would that help my taxes?
RM
Preparer
That’s a great question and it’s worth exploring — but it’s a bigger conversation than today. Entity structure is something we cover in a later module. For now, filing as a sole proprietor on Schedule C is exactly right for where your business is.
🛠️
Sam
Okay. I just want to make sure I’m doing this right.
RM
Preparer
You are. The most important thing you can do at this stage is track your income and expenses accurately. The structure question comes later, when the business is bigger.
Step 6 — Calculating Self-Employment Tax
💬 Explaining the SE Tax to Sam
RM
Preparer
Okay. Net profit from your business is $9,218. On top of income tax, you owe self-employment tax on that.
🛠️
Sam
The Social Security and Medicare thing?
RM
Preparer
Exactly. You learned that already. SE tax on $9,218 is about $1,301. That gets added to your income tax.
🛠️
Sam
And the warehouse W-2?
RM
Preparer
They withheld taxes on that all year. Let me pull it in. Your W-2 shows $14,200 in wages and $1,680 withheld. Combined with the business income, your total income is $23,418. After the standard deduction of $15,000 and the SE tax deduction of $651, your taxable income is about $7,767. Income tax on that is around $778.
🛠️
Sam
So what do I owe?
RM
Preparer
Total tax is $778 income tax plus $1,301 SE tax = $2,079. You already paid $1,680 through the W-2 withholding. So you owe $399 today.
🛠️
Sam
That’s not bad.
RM
Preparer
The business deductions did their job. Without the mileage alone, you would have owed over $2,000 more.
💵 Sam’s Final Return — Complete Numbers
W-2 wages$14,200
Schedule C net profit$9,218
Total income$23,418
SE tax deduction (half of SE tax)($651)
Standard deduction($15,000)
Taxable income$7,767
Income tax$778
Self-employment tax$1,301
Total tax liability$2,079
Federal withholding (W-2)($1,680)
AMOUNT OWED$399
Step 7 — Closing the Appointment
💬 Setting Up for Next Year
RM
Preparer
Before you go — three things for next year that will make a real difference.
🛠️
Sam
Okay.
RM
Preparer
First: download the Stride app tonight. Every business drive, tap it when you start and when you stop. At the end of the year it produces a mileage report. That alone could save you an extra $2,000 or more in deductions because I’m confident you drove more than 12,000 miles.
🛠️
Sam
Okay.
RM
Preparer
Second: open a checking account just for the business. Everything business-related goes in and out of that account. Your deposits are your income record. Your payments are your expense record. No sorting.
🛠️
Sam
That makes sense.
RM
Preparer
Third: make quarterly estimated payments. Based on this year, you should pay about $500 per quarter — April, June, September, and January. I’m printing you four 1040-ES vouchers right now. The payment goes to IRS Direct Pay online. If you do this, you won’t owe anything in April.
🛠️
Sam
Last year I didn’t know any of this.
RM
Preparer
That’s why you came in. Now you know. See you next year — and call me if anything big changes before then.
💡
If You Only Remember One Thing About Schedule C Returns...
The income question and the expense question are equally important. Understating income is a compliance problem. Overstating expenses — or missing legitimate ones — costs your client real money. Take the same care with both. Ask about every income source. Ask about every expense category. The return that finds every legitimate deduction is the return your client tells their friends about.
🏢
🏢 Real Office Scenario
A pressure washing business owner comes in with a 1099-NEC for $12,000 and says that’s everything he earned. You ask: “Any other jobs — cash, Venmo, anything without a form?” He thinks about it. “Yeah, maybe another $8,000 from homeowners who just paid me directly.” Without that question, the return would have shown $12,000 in income instead of $20,000. Now you ask about expenses. He has minimal records. But he drove about 300 miles per week for 40 weeks. That’s 12,000 miles at 70 cents — $8,400 in mileage. Plus supplies, plus his work truck maintenance. Total deductions over $11,000. Net profit around $9,000. A return that started out looking simple turned into a complete Schedule C that both accurately reports income and claims every legitimate deduction.
⚠️
⚠️ Common Beginner Mistake
Rushing through the expense section because the client seems in a hurry. Every expense category you skip is money left on the table. A $500 advertising deduction reduces SE tax by about $70 and income tax by another $50 — $120 in tax savings for asking one question. Slow down for expenses. Every category matters.
💬 Words You'll Hear in the Office
Schedule CIRS form for reporting business income and expenses for a sole proprietor. Net profit flows to Form 1040.
Gross ReceiptsTotal business income before expenses. All sources combined.
Net ProfitGross receipts minus deductible expenses. The number that drives both income tax and SE tax.
1040-ESQuarterly estimated tax vouchers. Printed at the end of the appointment for every self-employed client.
StrideA free mileage tracking app recommended to service-based gig workers.
Sole ProprietorA self-employed individual operating a business alone without forming a separate legal entity. Files Schedule C.
📋 From the Desk of Ralph Martinez
Sam’s return is a good one. He had mixed income, incomplete records, and had never filed a Schedule C before. By the end of the appointment he understood his tax bill, had a plan for next year, and left with four estimated tax vouchers in his hand. That’s what a good appointment looks like. You don’t need a client to walk in organized and prepared. You need to be organized and thorough enough to build the return accurately from whatever they bring. That’s the job.
— Ralph Martinez · Ruskin, FL · Est. 2001