The Business Owner's Tax Playbook: 5 Legal Loopholes Most Owners Never Use

Here's a distinction that costs business owners a fortune every year: your CPA files your taxes. That is not the same thing as lowering them.

Filing is a look in the rearview mirror. Your accountant takes what already happened last year, drops it into the right boxes, and tells you what you owe. It's necessary, it's accurate, and it saves you almost nothing — because by the time the return is being prepared, the year is over and every decision that could have cut the bill is already behind you. ‍

Lowering your taxes is a different job. It happens during the year, on purpose, using strategies that are sitting right there in the tax code and that most owners simply never put to work. None of what follows is a gray area or an aggressive scheme. These are legitimate, IRS-sanctioned tools. They just require you to set them up correctly and document them — which is exactly why the average owner, and plenty of average accountants, skip them. ‍

Here are five worth knowing. A quick disclaimer before we start, and I mean it: I run an investment firm, not an accounting firm. Treat this as a list of questions to bring to your CPA, not as tax advice for your specific situation. The details matter enormously, and the difference between "brilliant" and "audit" is usually paperwork. ‍

1. The Augusta Rule: rent your home to your own business

There's a quirk in the tax code — Section 280A(g), nicknamed the "Augusta Rule" after the town that hosts the Masters — that lets you rent out your personal residence for up to 14 days a year and pay zero income tax on the money you collect. It was originally written so Augusta homeowners could rent to golf-tournament crowds tax-free.

If you own a business, you can be on both sides of that transaction. Your company rents your home for legitimate business use — a quarterly strategy offsite, a board or leadership meeting, a planning retreat — and pays you a fair-market rate for the space. The business deducts the rent as a real expense. You receive it completely free of income tax, as long as you stay within 14 days for the year. ‍

The catch is documentation, and it's non-negotiable: a genuine business purpose, a written rental agreement, meeting notes or an agenda proving the day happened, and a rate you can defend by pointing to what a comparable venue in your area would charge. Do it sloppily and it's a red flag. Do it right and it's a clean, recurring deduction most owners have never heard of.

2. Put your kids on the payroll

If your children do real work for your business, you can pay them a reasonable wage for it — and the tax math is remarkable.

The wages are a deductible business expense to you, which pulls that income out of your top tax bracket. Your child, meanwhile, can earn up to the standard deduction amount — roughly $16,000 in 2026 — and owe zero federal income tax on it, because the standard deduction wipes it out. You've effectively shifted income from your rate to their 0% rate, and kept it in the family. ‍

It gets better. If your business is a sole proprietorship or a partnership owned only by the child's parents, wages paid to your own child under 18 are also exempt from Social Security and Medicare (FICA) taxes. And because the child now has earned income, they're eligible to fund a Roth IRA — meaning a teenager can start compounding retirement money decades early, tax-free.

The rules here are strict and worth respecting: the work has to be real, age-appropriate, and actually performed, and the pay has to be reasonable for the job. Keep a timesheet and pay them like a real employee. "My 4-year-old is a marketing consultant" is how you buy yourself an audit. "My 16-year-old runs our social media for $15 an hour" is how you do it right.

3. Build a retirement plan that actually matches your income ‍

Most owners default to a SEP-IRA or a basic solo 401(k) and stop there, leaving enormous deductible room on the table.

Start with the solo 401(k), which is the right base for an owner with no employees other than a spouse. In 2026, you can defer up to $24,500 as the "employee," and between your employee and employer contributions put away up to $72,000 total. If you're 50 or older, a catch-up adds $8,000 (bringing you to $80,000); and a special rule for ages 60 to 63 allows an even larger catch-up of $11,250, pushing the ceiling to $83,250. Every dollar is a deduction. ‍

For high-income owners who want to shelter more than that — established, profitable businesses where the owner is a bit older and out-earns the staff — the real weapon is a cash balance plan layered on top of the 401(k). These defined-benefit-style plans can allow deductible contributions well into the six figures, sometimes north of $200,000 a year depending on your age and income, because the older you are, the more the plan lets you fund to hit your retirement target. Few strategies move a high earner's tax bill more, and almost no one is told about it until they ask.

4. The accountable plan (and paying yourself the smart way)

If you operate as an S-corporation, two moves work together.

First, reasonable compensation: an S-corp owner pays themselves a reasonable W-2 salary and can take additional profit as distributions, which aren't subject to the roughly 15.3% Social Security and Medicare tax that hits salary and self-employment income. Split it correctly and the savings are meaningful; split it too aggressively — a tiny salary and huge distributions — and the IRS will challenge it. "Reasonable" is the whole game, and it should be documented.

Second, and more overlooked, the accountable plan: a formal written arrangement under which your business reimburses you for legitimate business costs you personally incur — the home office, mileage on your personal vehicle, your cell phone, travel. Done through an accountable plan, those reimbursements are a deduction to the business and completely tax-free to you — far cleaner than trying to claim scattered personal deductions on your own return. It's a small piece of paperwork that quietly converts expenses you're already paying into tax-free money.

5. Cost segregation and 100% bonus depreciation

If you own the building your business operates in — or any commercial or investment real estate — this is the big one, and a recent law change just made it dramatically more powerful.

Normally you depreciate a commercial building slowly, over 39 years. A cost segregation study is an engineering-based analysis that breaks the property into its components and reclassifies the shorter-lived pieces — fixtures, certain flooring, specialized electrical, landscaping, and the like — into 5-, 7-, and 15-year categories that depreciate far faster.

Here's why it matters right now: the One Big Beautiful Bill Act permanently restored 100% bonus depreciation for qualifying property acquired and placed in service after January 19, 2025. That means the shorter-lived components a cost seg study identifies can often be fully deducted in year one instead of dragged out over decades. On a meaningful property, that can translate into a very large first-year deduction — real money moved from the IRS's timeline to yours. (For improvements that don't qualify for bonus, like a new roof or HVAC, Section 179 expensing now reaches up to $2.5 million, another lever in the same toolbox.)

A study costs money and needs a qualified firm to hold up under scrutiny, so it's not for a $200,000 condo. But for owner-occupied commercial buildings and serious real estate, the first-year deduction routinely dwarfs the cost of the study.

The real point

Notice the thread running through all five: every one of them has to be set up in advance and documented properly. That's the entire reason they go unused. They don't happen when you file. They happen when you plan — deliberately, during the year, before the window closes.

That's also the difference between a tax preparer and a tax strategy. The preparer records what you did. A strategy decides what you'll do. Most owners have the first and have never been walked through the second, which is how people earning very good money hand the IRS far more than the law actually requires.

If you're a business owner and no one has ever proactively brought moves like these to you — or you want a second set of eyes coordinating your tax strategy alongside your investments, rather than treating them as two separate worlds — that's a conversation worth having. You can reach us here: https://forecastcapitalmanagement.com/contact

Your CPA will file your return either way. The question is whether anyone helped you lower the number before it got there.

Jason C. Hilliard, J.D., is CEO and Managing Director of Forecast Capital Management. This is general educational information, not tax, legal, or accounting advice. Tax strategies carry specific requirements and risks and depend entirely on your circumstances; consult a qualified CPA or tax advisor before implementing any of them.