Most small business owners think about taxes twice a year: when the deadline is approaching, and when the bill arrives.
By then, the damage is already done.
Mid-year tax planning, specifically the window between June and August is one of the most underutilized strategies in small business finance. It’s the moment when you still have enough runway to change your outcome. Adjust your estimated payments. Accelerate deductions. Revisit your entity structure. Make the retirement contribution you kept meaning to set up.
Wait until November, and most of those levers are gone.
This guide covers exactly what to do right now, why it matters more than most business owners realize, and how a proactive mid-year review can be the difference between a manageable tax bill and an unpleasant April surprise.
April 15 gets all the attention. But from a tax strategy standpoint, the most valuable time of year is right now.
Here’s the logic: tax planning works best when you have both information and time. By June, you have six months of real financial data – actual revenue, actual expenses, actual profit to work with. And you still have six more months to act on what that data tells you.
By October, you have more data but less time. By December, your options are significantly narrower. By April, you’re filing what already happened.
The business owners who consistently pay less in taxes legally, strategically are not the ones who find a magic deduction at the last minute. They’re the ones who review their financial position mid-year, make intentional decisions in Q3, and arrive at year-end with a plan already in motion.
Before you can plan, you need to know where you actually stand.
Pull your year-to-date P&L and compare it against what you projected at the start of the year. Specifically, look at:
Revenue: Are you tracking ahead of, behind, or in line with your forecast? If revenue is significantly higher than projected, your tax liability may be higher than your estimated payments have accounted for. If it’s lower, you may be overpaying.
Expenses: Are there categories that have grown more than anticipated? Some of those increases may create legitimate deduction opportunities if handled correctly.
Net profit: This is the number that determines your tax bill. If your net profit for the first half of the year is materially different from what you expected, your Q3 and Q4 estimated tax payments need to reflect that.
This comparison is the foundation of everything else. Without it, you’re making adjustments in the dark.
Estimated taxes are one of the most common sources of penalty, not because business owners forget to pay them, but because they pay the wrong amount.
There are two acceptable methods for calculating estimated payments:
The prior year method: Pay at least 100% of last year’s tax liability (110% if your adjusted gross income exceeded $150,000). This creates a safe harbor, even if you owe more at filing, you avoid underpayment penalties.
The current year method: Pay based on what you actually expect to owe this year. This is more accurate but requires a solid projection of your current-year income and expenses.
If your business has grown significantly since last year, the prior year method may leave you with a large balance due in April — with no penalty, but a significant cash flow surprise. If your business has slowed down, using current year projections may allow you to reduce your payments and keep more cash in the business.
Your Q3 estimated payment is due September 15. That gives you time right now to run the numbers, understand which method makes sense for your situation, and make any necessary adjustments.
Retirement contributions are one of the most powerful tax reduction tools available to self-employed individuals and small business owners, and they’re consistently underutilized.
If you’re self-employed, here are the primary options to review at mid-year:
SEP-IRA: Allows contributions up to 25% of net self-employment income, with a 2026 limit of $70,000. Contributions are deductible, reduce your taxable income dollar-for-dollar, and can be made up until your tax filing deadline (including extensions).
Solo 401(k): Allows contributions both as an employee (up to $23,500 in 2026) and as an employer (up to 25% of compensation), with a combined limit of $70,000. The Solo 401(k) must be established by December 31 of the tax year, even if contributions can be made later.
SIMPLE IRA: Available to businesses with fewer than 100 employees. Employee contribution limit of $16,500 in 2026, with employer matching requirements.
The key mid-year action here is simple: know which plan you have, know how much you’ve contributed year-to-date, and calculate the maximum you can still contribute before year-end. For many business owners, this single adjustment can reduce taxable income by tens of thousands of dollars.
If you don’t have a retirement plan established yet — this is the moment to fix that. Some plans, like the Solo 401(k), have year-end setup deadlines.
Mid-year is a good time to audit your expense tracking, not to find deductions you don’t have, but to make sure you’re capturing the legitimate ones you do.
Common areas where small business owners leave deductions on the table:
Home office deduction: If you work from home and have a dedicated space used regularly and exclusively for business, this deduction is available, and often missed. It can be calculated using either the simplified method ($5 per square foot, up to 300 square feet) or the actual expense method.
Vehicle use: Business use of a personal vehicle is deductible, but only if you’re tracking it. Mileage logs matter. The 2026 standard mileage rate is 70 cents per mile for business use.
Professional development and education: Courses, conferences, books, subscriptions, and memberships directly related to your business are deductible.
Technology and software: Business-related software subscriptions, hardware, and tech tools qualify, including accounting software, project management tools, and communication platforms.
Health insurance premiums: Self-employed individuals can deduct 100% of health insurance premiums for themselves and their families, as an above-the-line deduction.
The question to ask at mid-year isn’t “what can I write off?” It’s “am I actually tracking and documenting what I’m already entitled to?”
If you’ve been considering a significant equipment purchase — vehicles, machinery, technology, furniture, the second half of the year is a strategic time to make it.
Section 179 of the tax code allows businesses to deduct the full cost of qualifying equipment in the year it’s placed in service, rather than depreciating it over multiple years. The 2026 deduction limit is $1,220,000.
Bonus depreciation, currently at 40% for 2026, allows an additional deduction on top of Section 179 for qualifying assets.
The practical implication: if you need new equipment and you’ll purchase it before December 31, the tax benefit is available in full for 2026. If you wait until January, you wait a full year for the deduction.
This is not a reason to make purchases your business doesn’t need. But if a purchase is already planned, timing it before year-end is worth understanding.
If you’re operating as a sole proprietor or single-member LLC and your net profit is consistently above $80,000–$100,000, it may be worth evaluating an S-Corporation election.
The core tax advantage of an S-Corp is the ability to split income between a reasonable salary and distributions. Self-employment tax (15.3%) applies only to the salary portion, not to distributions. At higher income levels, this split can generate meaningful tax savings.
However, S-Corps come with real compliance requirements: payroll processing, quarterly payroll tax filings, additional state filings, and stricter bookkeeping standards. The savings need to outweigh those costs.
Mid-year is a good time to have this conversation. An S-Corp election for the following tax year typically needs to be filed by March 15, which means the planning and analysis should happen well before then.
For a more detailed breakdown of entity structures, see our earlier post: Tax Strategy Tips for S-Corps, LLCs, and Self-Employed Professionals.
At DWG CPA, mid-year tax reviews are a standard part of how we work with clients — not an optional add-on.
Here’s what we cover in a typical mid-year review session:
The goal isn’t to find clever workarounds. It’s to make sure every legal advantage available to you is actually being used, and that you arrive at April with a number you already knew was coming.
If you haven’t had a mid-year conversation with your CPA yet, that conversation is already overdue.
The tax code rewards planning. Not scrambling, not last-minute deductions, not hoping the number comes out lower than expected planning.
Mid-year is your window. The data exists. The options are still open. And the decisions you make between now and September will shape what you owe or save in April.
At DWG CPA, we help small business owners use this window every single year. Because the difference between a tax strategy and a tax surprise is almost always just timing.
Ready to review where you stand? Schedule a consultation at dwg.cpa
If you’re building something important and need a trusted financial partner to grow with you – we’d love to hear from you.
DWG CPA PLLC is a Texas-based accounting firm serving businesses and nonprofits since 2005. We specialize in virtual accounting, tax strategies, and personalized financial guidance across industries like healthcare, construction, real estate, and nonprofits.
Copyright 2026 Designed & Developed by MYCPE ONE LLC. All Rights Reserved.