How IRS Schedule C works for a US lawn care sole proprietor

What to take away

Rates and dollar limits change every tax year. The IRS sets a new business mileage rate, Section 179 limit, bonus depreciation percentage and Social Security wage base each year. Its pages at irs.gov carry the figures for the return you are filing. Confirm them on the IRS mileage page and in the Instructions for Schedule C before you file.

Who files Schedule C in a mowing business

Mow lawns for money without a corporation or S corporation election, and the IRS calls you a sole proprietor. That covers a one-truck operator in Ohio and a two-crew outfit in Georgia.

Profit or loss lands on Schedule C, flows to Schedule 1, then to Form 1040. A single-member LLC files the same way by default: the LLC is a state-law shield, not a federal tax classification. You attach Schedule C every year you carry on the business.

Business or hobby

The IRS asks whether you run the route to make a profit. Regular customers, a business bank account and a written price list point to a business, and hobby income is reported differently.

If you are still deciding whether to register and insure the operation, the start a lawn care business guide covers the setup steps before your first invoice.

Part-time and seasonal routes

A teacher in North Carolina mowing twenty lawns on weekends files Schedule C. So does a New York operator running April through October. The test is activity, not hours.

When Schedule C is the wrong form

A partnership files Form 1065. A corporation files Form 1120 or 1120-S. Elect S corporation status to limit self-employment tax and your wages go on Form W-2 while your share of profit arrives on Schedule K-1.

The Schedule C lines a mowing business actually uses

Schedule C has five parts. A lawn care operation touches a predictable slice of them. The Instructions for Schedule C (Form 1040) | Internal Revenue Service carry the line-by-line rules.

Part I: income

Line 1 is gross receipts: every check, card payment, cash payment and app payout for cutting, trimming, edging and blowing. Line 2 covers refunds, which are rare on residential routes. Line 4 is cost of goods sold, usually zero for a service. Line 6 catches rebates and scrap metal sales. Line 7 is gross income.

Part II: expenses

Line 8 is advertising: yard signs, truck lettering, online ads. Line 9 is car and truck expenses. Line 10 is commissions and fees, where payment processor charges land. Line 11 is contract labor, the money you pay a helper who is not an employee.

Line 12 is depreciation. Lines 14 through 26 cover insurance, interest, legal fees, office expense and supplies.

Line 27a is where unnamed items go.

Part III: cost of goods sold

Skip it unless you sell bagged mulch or fertilizer as part of the service. Inventory changes the math.

Parts IV and V

Part IV asks the date your vehicle entered service, total miles, business miles and commuting miles, plus whether you have a personal vehicle. Answer only if you claim vehicle expenses. Part V itemizes Line 27a: small tools, blade sharpening, dump fees, uniforms, each with a description and an amount.

Self-employment tax on mowing profit

Self-employment tax is the sole proprietor's payroll tax. The rate is 15.3 percent, split into 12.4 percent for Social Security and 2.9 percent for Medicare. The Self-employment tax (Social Security and Medicare taxes) | Internal Revenue Service explains how it applies to net earnings.

The calculation in order

The half deduction

You deduct one half of the tax on Schedule 1 of Form 1040. It reduces income tax, not self-employment tax, and it applies whether you itemize or take the standard deduction.

Worked example

A Texas sole proprietor grosses $78,000 with $31,000 of deductible expenses. Net profit is $47,000. Net earnings are $47,000 times 92.35 percent, or $43,404.50. Self-employment tax at 15.3 percent is about $6,641, and the deduction is about $3,320. Substitute your own receipts and expenses to run the same arithmetic.

The Publication 334, Tax Guide for Small Business | Internal Revenue Service walks through business deductions and self-employment tax basics.

Mileage, fuel and vehicle costs

Your truck is one of the two largest costs in mowing. The IRS gives you two ways to claim it, and you choose per vehicle. The choice repeats every year.

Standard mileage rate

The IRS publishes a cents-per-mile figure each year. For tax year 2025 the business rate is 70 cents per mile. Multiply business miles by that rate. It covers fuel, insurance, repairs and depreciation, so you cannot add those separately.

You also cannot use it for a vehicle you depreciated with Section 179 or bonus depreciation, or for five or more vehicles used at once.

Actual expenses

Add gas, oil, insurance, repairs and depreciation, then multiply by the business-use percentage. A truck used 80 percent for mowing deducts 80 percent of those costs. This method usually wins on an older truck with repair bills or a dedicated work vehicle. Once you choose it for a vehicle, the standard rate is closed to that vehicle.

What counts as a business mile

Home office to a customer's lawn is a business mile when your home is your principal place of business. Home to your first customer and back at day's end can count too. Home to a shop you rent is commuting, and commuting is not deductible.

Log date, destination, purpose and odometer. Your lawn care quality control routine should capture mileage weekly, not in April.

Depreciating mowers, trailers and trimmers

A zero-turn, an enclosed trailer and a set of commercial trimmers are business assets. Under the default rules you depreciate them over a set life rather than deducting the price in year one.

Recovery periods

Most mowing equipment is seven-year property under MACRS. Mowers, trailers and trimmers sit in the seven-year class, while light trucks and computers sit in the five-year class. The default method is 200 percent declining balance with the half-year convention.

The half-year convention treats every asset as placed in service at the midpoint of the year. Year one gets half a year of depreciation and year eight gets the other half. The table shows the percentages for both classes.

These percentages apply to unadjusted basis, which is cost plus freight and installation. Place more than 40 percent of your asset purchases in the final quarter and the mid-quarter convention applies instead. Claim Section 179 or bonus depreciation on an asset and these percentages no longer apply to it.

Section 179 and bonus depreciation

Section 179 deducts the full cost of qualifying equipment in the year you place it in service, up to an annual dollar limit. For tax year 2025 the limit is $1,250,000, and the deduction phases out dollar for dollar once you place more than $3,130,000 of qualifying property in service. Bonus depreciation has no dollar cap.

It is a percentage of cost, and that percentage has moved several times. It was 100 percent through 2022, then stepped down to 80, 60 and 40 percent, and 100 percent was restored for most property acquired after January 19, 2025. Both pull depreciation forward when you have profit to absorb it.

Show a loss and the deduction may be limited or carried forward.

Business-use requirement

Use the asset more than 50 percent for business to claim Section 179. A mower that also cuts your own yard needs an allocation, so log jobs and hours for the first year.

Selling or trading equipment

Sale price against adjusted basis creates a gain or loss. A gain may be ordinary income to the extent of depreciation taken. Report it on Form 4797. A trade-in is treated as a sale under current rules, not a tax-free swap.

Worked example: equipment purchase

A Georgia operator buys a $12,000 zero-turn and places it in service in March with enough profit to use Section 179. She deducts the full $12,000 on Schedule C line 12, subject to the income limit.

Under MACRS she would deduct $1,714.80 in year one, which is 14.29 percent of the cost, and spread the remainder across seven years. That swing is large enough that the prices for profit you set should account for the tax bill in a big deduction year.

The records behind every figure

The IRS does not require a particular software package. It requires records that support each number on the return. The Publication 583, Starting a Business and Keeping Records | Internal Revenue Service states the standard.

How long to keep records

Supporting records for a return item: at least three years after you file. Employment tax records: at least four years. Asset records: until three years after the year you dispose of the asset. Underreport income by more than 25 percent and the window stretches to six years.

Separate the money

Open a business checking account and run every mowing transaction through it. Pay personal bills from a personal account. That one habit makes the Schedule C categories obvious and survives an audit. The monthly numbers you review should include a check that the ledger matches the bank.

Electronic records

Scanned receipts, photos of fuel pumps and spreadsheet mileage logs are acceptable if they are legible and complete. Back them up offsite. A phone that dies holding the only copy of your records is a tax problem, not a hardware problem.

EIN, estimated payments and state filings

An EIN is not mandatory for a sole proprietor with no employees and no excise tax liability. You can put your Social Security number on a commercial client's Form W-9. Many operators get an EIN anyway to keep the SSN off paperwork.

The Get an employer identification number | Internal Revenue Service explains when a sole proprietor needs one and how to apply online. You need one if you hire employees, file certain excise or pension returns, or open a bank account that requires it.

Estimated quarterly taxes

Self-employment income has no withholding, so you pay as you go. Four payments, generally due April, June, September and January, based on last year's tax or 90 percent of this year's liability. A Florida or Arizona route with seasonal cash may prefer the annualized installment method. Underpayment triggers a penalty, so check the safe harbor rules.

State and local filings

Most states with an income tax require a state return and sometimes a state estimated schedule. Some states and cities charge a business license fee or personal property tax on equipment.

Contractor licensing boards, departments of agriculture and consumer affairs offices set pesticide application rules, and fuel taxes may apply to off-road diesel.

A startup budget should carry these registration costs before the first mow.

Employees and contractors

Pay a helper $600 or more in a year and you owe a Form 1099-NEC. Treating a regular crew member as a contractor when they work set hours under your direction risks a worker classification problem. Payroll brings Form 941, unemployment tax and workers' compensation insurance. Those costs belong in your pricing from day one.

Common questions

Do I have to file Schedule C if I only mow a few lawns?

Yes, if the activity produces net profit and you are not a corporation. A small route in Ohio or North Carolina goes on Schedule C the same as a large one. A loss may also need to be reported.

Can I deduct my mower in full the year I buy it?

Often, through Section 179 or bonus depreciation, if you use it more than 50 percent for business and have enough profit. Otherwise it depreciates over seven years under MACRS. A CPA can tell you which fits your year.

Should I use the standard mileage rate or actual expenses?

Run both numbers for your truck. The standard rate is simple and often better for high-mileage, low-cost vehicles. Actual expenses can win for an expensive or heavily repaired work truck, but the choice locks in for that vehicle.

How much is self-employment tax on my mowing profit?

The rate is 15.3 percent on net earnings, which are net profit multiplied by 92.35 percent. Half of the tax is deductible on Form 1040. The Social Security portion stops at the annual wage base; Medicare does not.