Mark J Kohler Blog | America's Small Business Tax Expert

Art of the Side Hustle: Make & Keep More of your Money

Written by Mark J. Kohler | Mar 18, 2025 1:40:39 PM

 

If you’ve got a skill, a hobby, or a talent outside your regular job and people are willing to pay you for it, congratulations, you have a side hustle. Or, as I call it, “the gateway drug to the American Dream.” A side hustle is an opportunity to build real income and long-term wealth. But if you’re not managing it correctly, you could be missing critical deductions and paying way more in taxes than you need to be.

Your Side Hustle Is Already a Business

The moment you start making money outside your regular job, the IRS sees you as self-employed. It doesn’t matter if it’s weekend work, freelance projects, selling products online, or driving for a rideshare platform. If there’s profit, it’s business income.

A lot of people assume side income is casual or too small to worry about. The tax code doesn’t see it that way. Once you earn money outside a W2 job, you’ve entered the world of business taxation. That may sound like bad news, but it’s actually where opportunity starts. Business owners get access to deductions and strategies that employees straight-up don’t have.

The Tax Surprise Side Hustlers Run Into

The biggest surprise for many side hustlers is self-employment tax. When you work a traditional job, Social Security and Medicare taxes are split between you and your employer. When you run your own business, you’re responsible for both portions. That combined rate is 15.3% on your net income.

So if your side hustle produces $10,000 in profit, about $1,530 could go toward self-employment tax before income tax is even calculated. That doesn’t mean a side hustle isn’t worth it. It just means you need to understand how the system works so you can plan for it and reduce the tax impact where possible.

The Write-Offs Side Hustlers Miss

One of the biggest advantages of having a side hustle is access to legitimate business deductions. The challenge is that many people fail to track them properly.

Here are the most common deductions that side hustlers use to their advantage:

  • Home office
    If you use part of your home regularly and exclusively for business, you may qualify for the home office deduction. The simplified method allows a deduction of up to $1,500 depending on square footage.

  • Business mileage
    If you drive for your business, those miles can be deductible. The IRS standard mileage rate is adjusted periodically and has recently been around 67 cents per mile.

  • Technology and equipment
    Laptops, cameras, microphones, lighting, tools, software subscriptions, and other equipment used for the business can be deductible.

  • Phone and internet
    If your phone and internet service support your business activity, a portion of those expenses may qualify as deductions.

  • Travel and meals
    Business travel such as flights, hotels, and transportation can generally be deducted. Business meals are typically 50% deductible when properly documented.

  • Hiring your kids
    If structured correctly, paying your kids to help in the business can create legitimate deductions and shift income in a tax-efficient way.

One simple habit makes all of this easier. Open a separate bank account for the side hustle. Clean records make tax planning far more effective.


When Your Side Hustle Needs Real Structure

A lot of side hustles start small, and that’s perfectly fine. You don’t need an entity the moment you make your first few hundred dollars. But once income starts climbing, structure becomes more important.

If your side hustle is producing around $20,000 or more annually, it’s worth stepping back and asking a few questions.

  1. Do you need liability protection?
  2. Is self employment tax becoming significant?
  3. Is the business growing beyond a simple weekend project?

At that point, most side hustlers form an LLC. An LLC doesn’t reduce taxes by itself, but it does separate personal assets from business liability.

If profits keep growing, the next step might be an S corporation election. Leverage it right and an S corporation can reduce self-employment tax on part of business income.

But you have to remember that timing matters here. The goal is to introduce structure when the income actually justifies it.

Turning a Side Hustle Into Long-Term Wealth

A side hustle isn’t just extra spending money. It’s one of the easiest ways to build an additional income stream and test business ideas without walking away from your day job. Some side hustles stay small and flexible. Others grow into full businesses. The difference usually comes down to how seriously the owner treats it.

When you start treating your side hustle like a real business, the entire financial picture changes. You gain access to deductions, retirement strategies, and planning tools that simply don’t exist when all of your income comes from a W2 job. That’s where the leverage begins.

Your side hustle income can help fund retirement accounts designed for business owners. It can help you build capital to invest in real estate or other assets. It can even evolve into something that eventually replaces your primary income if you choose to scale it. But none of that happens by accident.

Track the income. Track the expenses. Pay attention to structure when the numbers start growing. Those simple habits turn what begins as extra income into a legitimate wealth-building strategy.

The Bottom Line

Your side hustle already counts as a business whether you planned it that way or not. The real question is whether you’re running it strategically. With the right deductions, solid records, and the right structure at the right time, you can keep more of what you earn and give that extra income a chance to grow into something bigger.

For help coordinating your side hustle with the right tax and legal strategy, book a free 15-minute call with my team at KKOS Lawyers and we’ll walk through the structure that fits your situation.

And if you’re serious about building that side hustle into a real business, book a free discovery call to check out my Business Owner “Situation Room.” It’s a live strategy membership where business owners get direct access to me twice a month to ask tax, legal, and growth questions in real time. You’ll get structured training, tools, and a clear roadmap for every phase of your business from startup to scaling to eventual exit.

Instead of guessing your way through the biggest decisions in your business, you’ll have a place to bring those questions and get real answers.