Earning Over $100K on the Side? What Are 6 Tax Moves You Should Make Now?

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Summary of What This Blog Covers

  • When to choose LLC or S-Corp for tax savings

  • How to track expenses and manage self-employment tax

  • Using retirement plans to lower your tax bill

  • Knowing your profits to make smarter growth moves

Let’s have a real conversation.

You didn’t build your side hustle for the paperwork. You didn’t start this journey just to figure out tax codes, entity elections, or how to fill out a 1099-NEC. You built it for freedom. For creativity. For the thrill of watching something that was once just an idea turn into actual income. Maybe even life-changing income.

But once you hit that six-figure milestone ($100K and beyond) you cross an invisible line. The stakes shift. The IRS starts paying attention. And, honestly, you should too.

The way you manage your money, structure your business, and approach your taxes will either accelerate your success or quietly drain it.

But here’s the good news: it’s not about having all the answers. It’s about asking the right questions and getting support from people who see the bigger picture with you.

So whether you’re an e-commerce founder, consultant, coach, creative, or a multi-hyphenate side hustler who’s suddenly got a real business on their hands, this guide is your next step.

Let’s dive into the six tax moves that will help you protect your profits, plan proactively, and take your business from “side hustle” to “serious growth engine.”

1. Choose the Right Business Structure (And Know When It’s Time to Pivot)

Let’s talk about the foundation of it all: your business entity.

If you’re still operating as a sole proprietor, reporting everything on a Schedule C without any formal business registration—hey, no judgment. That might’ve worked when your side income was a few hundred bucks here and there.

But now? You’re making real money. You’re dealing with clients. Vendors. Inventory. Platforms. And possibly your first contractors or team members. The way your business is structured impacts how much you pay in taxes, how investors or lenders perceive you, and whether you’re legally protected.

So what are your options?

Sole Proprietor (Default):

Easy, but lacks liability protection and offers no real tax advantages at higher income levels.

LLC (Limited Liability Company):

This is a smart step for many six-figure entrepreneurs. It’s simple to set up, gives you liability protection, and is flexible when it comes to taxation. You can choose to be taxed as a sole proprietor, a partnership, or an S-Corp.

S-Corporation:

Ah, the magic move. When your net income is over $75,000, electing S-Corp tax status can save you thousands in self-employment taxes. It lets you pay yourself a salary (which is subject to employment tax), and take the rest of your profit as a distribution (which is not). Huge tax win.

But it’s not just about the structure, it’s about how and when you make the change. You’ll need to file Form 2553, set up payroll, and treat your business with more operational discipline.

This is where a small business CPA in Austin or a certified public accountant near you becomes your new best friend. Not only can they guide you through entity selection, they can help you weigh the pros and cons based on your income, industry, and goals.

And if you’ve been Googling “LLC vs S-Corp tax benefits” or “do I need a CPA to elect S-Corp?”, consider this your sign. It’s time to stop guessing and start building on solid ground.

2. Track Every Deductible Expense (Because Yes, It All Adds Up)

There’s a moment for every business owner (usually sometime around tax season) when they look back and wonder, “Wait, could I have written that off?”

Short answer: probably.

Long answer: it depends on whether you tracked it, categorized it, and kept proper documentation.

Now that your side hustle is crossing into six-figure territory, deductions become critical. They’re not just tax perks, they’re one of the most immediate ways to reduce your taxable income and increase what you keep.

Here’s the kind of stuff you might be missing:

  • That Canva Pro subscription? Deductible.

  • Your business mileage for the client meeting across town? Deductible.

  • Part of your rent or mortgage if you use a dedicated home office space? Yep, deductible.

  • The podcast mic you bought to launch your brand content? Absolutely.

This is where so many self-employed folks lose money because they don’t have systems. They’re digging through email receipts, missing Venmo payments, or treating bookkeeping as a once-a-year scramble.

Use cloud-based accounting tools. Create digital folders. And better yet, hire a tax preparer near you who will show you how to document expenses cleanly and get more strategic with your spending.

Trust me, your future self (and your CPA) will thank you.

3. Understand and Maximize Self-Employment Tax Deductions

Let’s talk about that thing nobody tells you until it hits you hard: self-employment tax.

When you work a W-2 job, your employer pays half of your Medicare and Social Security taxes. But when you’re self-employed? You pay both halves to the tune of 15.3% on net income.

So if you earned $100,000 and didn’t structure or plan properly? You could be looking at a $15,000+ tax bill before you even factor in income tax.

But there’s a bright side. There are tons of ways to legally reduce your self-employment tax burden, including:

  • Deducting half of your self-employment tax on your personal return

  • Writing off qualified health insurance premiums

  • Choosing the right structure (again, S-Corp election is a game-changer)

  • Opening retirement accounts (more on this below)

The trick is timing and documentation. Working with a certified CPA near you or Austin tax accountant can help you identify overlooked deductions and prevent costly surprises at tax time.

Bonus tip: if you’ve got multiple streams of income—say, affiliate revenue, online coaching, and digital product sales—you may be taxed differently on each. Getting this coordinated with a tax consultant near you can make a big difference in how your taxes shake out.

4. Pay Your Quarterly Estimated Taxes Consistently

Okay, here’s a truth bomb: if you’re making more than $100K and not paying quarterly estimated taxes, you’re playing with fire.

The IRS expects self-employed individuals to pay taxes throughout the year, not just in April. If you don’t? You could face penalties and interest, even if you pay your full amount by the deadline.

Here’s the deal: estimated taxes are due four times per year (April, June, September, and January). And if you’ve got a high-income month or quarter, you need to adjust your payment amounts accordingly.

So how much should you be paying?

That depends on your:

  • Net income

  • Business deductions

  • Entity structure

  • State tax obligations (yep, Texas, we see you with no state income tax but not every reader is that lucky)

Use a 1099 tax calculator for rough estimates or better yet, sit down with a CPA in Austin, Texas who can create a custom quarterly plan based on your actual income trends.

Quarterly tax planning is one of the most underrated ways to take control of your financial future. It’s also a key signal to the IRS that you’re running a real business, not just freelancing on the side.

5. Use Retirement Contributions as a Tax Strategy

Let’s talk about the long game.

When you’re self-employed, retirement planning isn’t just smart, it’s strategic. Not only do you build future wealth, but you also reduce your taxable income today.

And if you’re earning six figures, the savings can be substantial.

You’ve got a few powerful options:

SEP IRA:

Simple to set up. Allows you to contribute up to 25% of net earnings, maxing out around $66,000 per year. Contributions are tax-deductible.

Solo 401(k):

More complex but potentially more rewarding. You can contribute both as employer and employee, allowing for larger pre-tax contributions.

Traditional or Roth IRA:

Still great options, but limited to $6,500 annually ($7,500 if you’re over 50).

You may even qualify for a deduction on the cost of setting up and administering your retirement plan, which is a lesser-known benefit many tax professionals near you or certified CPAs can help you unlock.

Want to double your savings? Pair your contributions with an S-Corp salary strategy that allows you to contribute more as the employee of your own business.

Yes, it’s as cool as it sounds.

6. Know Your Numbers Like the CEO You Are

So often, self-employed entrepreneurs operate from the gut. They feel like they’re doing well. The Stripe notifications are rolling in. There’s money in the account. But at tax time? Surprise. Not all that money was profit.

Understanding your:

  • Breakeven point

  • Profit margins

  • Operating costs

  • Quarterly tax needs

  • Cash reserve targets

… is what separates successful hustlers from sustainable business owners.

Do you know how much you need to earn to cover your living expenses, tax obligations, and future growth goals?

Do you have a system for forecasting income and setting goals that align with your desired lifestyle?

A good Austin accounting service or CPA office near you isn’t just about tax prep. It’s about financial clarity, data-informed decisions, and helping you think and operate like a founder, not just a freelancer.

Final Thoughts: You Built This, Now Let’s Protect It

Here’s the truth: taxes can feel intimidating. But they’re also a sign of success. Paying taxes means you earned money. It means your idea worked. And with the right plan in place, it also means you get to keep more of what you earn.

So don’t let fear or confusion hold you back from taking action.

Whether you’re side hustling your way to financial independence, preparing to leave your 9-to-5, or just hitting new revenue milestones faster than expected, you don’t have to figure this out alone.

Let us help you optimize your tax strategy, stay ahead of deadlines, and make confident, strategic decisions that grow with you.

Contact Insogna today and let’s turn your tax season into a launchpad not a liability.

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Matthew Edwards