Why this guide exists
You didn't start your business to become an accountant.
You started it because you were good at the work — fixing the HVAC, running the wires, pulling the permits, building the deck. Somewhere along the way, somebody handed you a stack of paperwork and said "don't forget about the books."
And then the IRS sent a letter. And then your tax bill was twice what you expected. And then your bookkeeper went silent for three months. And then you found yourself reading this article at 11 PM on a Tuesday.
Welcome. This guide pulls together the ten financial areas every Texas trades business owner needs to understand. Not in accountant-speak. Not in 80-page IRS publications. Just the practical version — what matters, what it costs you to ignore, and what to actually do about it.
HVAC contractors, plumbers, electricians, general contractors, roofers, landscapers, and other small trades businesses operating in the DFW metroplex — Fort Worth, Dallas, Arlington, Burleson, Plano, Frisco, and surrounding Tarrant, Dallas, Denton, and Collin county areas.
The big picture: how the pieces fit together
Before specifics, here's the mental model. Everything in your business finances flows in one direction:
Bookkeeping is the foundation. It captures what actually happened.
Financial statements sit on top of bookkeeping. They turn raw data into a P&L and Balance Sheet.
Tax strategy sits on top of financial statements. It uses your real numbers to make decisions.
Cash flow and growth decisions sit on top of tax strategy.
If the foundation is cracked, everything above it is guessing.
1. Bookkeeping: the foundation
Every decision you make — whether to take on that job, hire that helper, buy that truck — is supposed to be informed by your numbers. In a business with profit margins as thin as trades typically run (6–15% net is normal), guessing kills companies.
Clean books mean every bank account, credit card, and loan reconciled monthly. Every transaction categorized correctly. Income and expenses separated by job or class when relevant. Monthly P&L and Balance Sheet that reflect reality.
For most Texas trades businesses, QuickBooks Online Plus is the right tool — it integrates with Jobber, ServiceTitan, Housecall Pro, and most other field-service apps. Detailed guide: Job Costing in QuickBooks for Contractors
2. Entity structure: sole prop, LLC, or S-Corp?
This is the single highest-leverage decision a trades business owner makes — and the one most owners get wrong by staying in the default longer than they should.
The short version:
- Sole prop: Simplest. No legal protection. Full 15.3% self-employment tax.
- LLC taxed as sole prop: Same taxes, but legal liability protection.
- LLC with S-Corp election: The big tax-saver. Typically saves $4,000–$15,000+ per year for trades businesses.
- C-Corp: Almost never the right answer for a small trades business.
The rule of thumb: once your net business profit clears around $50,000–$60,000 per year, an S-Corp election usually starts paying for itself. Full deep-dive: Sole Prop vs. LLC vs. S-Corp for Trades Businesses
3. Self-employment tax: why you're paying 15.3%
This is the silent killer for trades business owners. If you're a sole prop or single-member LLC, every dollar of profit gets hit with 12.4% Social Security tax (on the first $176,100) and 2.9% Medicare tax. That's 15.3% in self-employment tax, on top of regular income tax.
On $100,000 of profit, that's $15,300 just for SE tax — before you've paid a penny of income tax. Full breakdown: Self-Employment Tax Explained
4. Tax deductions every trades business misses
Trades businesses leave money on the table at tax time because most generic tax preparers don't know what to look for. Vehicle expenses, Section 179, home office, self-employed health insurance, retirement contributions, the Section 199A QBI deduction — these add up to thousands in legitimate savings every year.
Full guide: The Complete Tax Deduction Guide for HVAC, Plumbing & Electrical Contractors
5. Section 179 and the truck deduction
If you're going to buy a new work truck or major piece of equipment, when you buy it matters as much as what you buy. Section 179 lets you deduct the full purchase price in the year placed in service — for 2026, up to $2,560,000 in qualified purchases.
Under the One Big Beautiful Bill Act (OBBBA), signed July 4, 2025, 100% bonus depreciation was reinstated for property placed in service after January 19, 2025. For a typical trades business, this means you can write off the entire cost of a $70,000 work truck in year one. Detailed guide: Section 179 & The Trades Truck Deduction
6. Texas tax deadlines you can't miss
Texas has no state income tax — but Franchise Tax, the Public Information Report, Business Personal Property Tax, sales tax, and federal filings all still apply. Per the Texas Comptroller, the 2026 no-tax-due threshold is $2.65 million in revenue — but even if you owe $0, you still must file the Public Information Report by May 15. Miss it and your entity can be administratively forfeited.
Full calendar: Every Texas Tax Deadline a Trades Business Owner Needs to Know
7. Job costing: knowing which jobs make money
Per QuickBooks research, 40% of small construction businesses don't track job-level profitability. The contractors who do consistently report 15–25% higher margins. Without job costing, your P&L tells you whether the whole business was profitable last month — but not which specific jobs created that profit or which ones quietly bled cash. Detailed guide: Job Costing in QuickBooks for Contractors
8. 1099 vs. W-2: are your subs actually subs?
The #1 IRS audit issue in trades. Per IRS guidance on worker classification, the test is behavioral control, financial control, and the type of relationship — not what you call them on paper. Misclassification can cost $6,000–$8,000+ per worker, per year in back taxes, penalties, and interest. Detailed guide: 1099 vs. W-2: Are Your Subcontractors Actually Subcontractors?
9. Quarterly tax planning: the 90-day system
Real tax savings happen during the year — not in April when your CPA is finalizing the return. By the time you're at your CPA's desk in March, most of the moves that could have saved you money are off the table. The owners who pay the least tax (legally) run a quarterly rhythm: project, plan, execute, adjust. Detailed guide: Quarterly Tax Planning: The 90-Day System
10. Cash flow: why profitable businesses run out of cash
Profit on paper doesn't pay bills. Cash flow does. The gap between completing work and collecting cash is where trades businesses get killed. The fix is a 13-week rolling cash flow forecast, a dedicated tax reserve (25–30% of profit set aside automatically), tighter AR management, and matching payable terms to receivable terms. Detailed guide: Why Profitable Trades Businesses Run Out of Cash
Putting it all together: where to start
If you've read this far, you're probably looking at your own business through one of a few lenses:
"My books are a wreck." Start with bookkeeping. Get the foundation clean first. Everything else is built on it.
"I'm pretty sure I'm overpaying in taxes." Start with entity structure and self-employment tax. If you're a sole prop making real money, the S-Corp conversation should happen this year, not next.
"I'm losing money on jobs and I don't know which ones." Start with job costing. You can't fix what you can't see.
"I made way more this year and I'm scared of my tax bill." Start with quarterly planning. It's not too late to make moves — but the clock is ticking on December 31.
"I'm running out of cash even though business is good." Start with cash flow.
Where Northbound fits
If you'd rather not figure this out alone, that's what we do. Northbound is a Fort Worth bookkeeping and tax firm built specifically for DFW small businesses — with a sweet spot for HVAC, plumbing, electrical, and other trades. Run by a Texas-licensed CPA. One person who actually knows your business, picks up the phone, and explains things in plain English.
- Clean books every month (Foundation plan)
- Tax returns + every Texas filing handled (Growth plan)
- Quarterly CPA review reports that run the rhythm in Section 9 automatically
Or if you're just here for the guides, that's fine too. Bookmark this page and work through the deep-dives at your own pace.
Ready to talk? Book a free 30-minute discovery call. No pressure, no sales pitch — just a real conversation about your business.
All tax figures and rules cited are based on 2026 federal and Texas tax law as of publication, including OBBBA-effective changes. Confirm current figures and your specific facts with a qualified tax professional. Nothing in this article constitutes legal, tax, or financial advice for your specific situation.