
Julian Drago
November 12, 2025
Understanding what taxable income is and how it is determined is essential for anyone planning to start a business, invest, or expand their operations into the United States. The U.S. tax system requires that every taxpayer—whether resident, non-resident, or foreign company—understand which of their earnings are subject to taxation and how those amounts must be reported to the Internal Revenue Service (IRS).
Although the concept may seem simple at first glance, in practice it includes multiple categories, specific rules, and exceptions that directly affect the tax obligations of entrepreneurs and business owners. If you plan to operate in the U.S. through a business structure or generate income from that country, understanding these fundamentals will help you stay compliant and avoid fines or costly mistakes.
Taxable income includes all earnings that federal law considers subject to taxation. It does not matter whether the income is received in cash, in goods, or in the form of services: if there is no legal exception, it is considered part of the taxpayer’s gross income and must be reported.
A key point is that income is taxable when it is received, even if it has not been fully collected or if the payment is made to a third party on behalf of the taxpayer. This means the IRS focuses on when the income becomes available, regardless of whether the money is spent, saved, or redirected.
Understanding this principle helps avoid one of the most common mistakes among international entrepreneurs: assuming that income is only reported when it is actually collected or spent.

The IRS classifies taxable income into several groups, each with its own rules. The following are the most relevant for entrepreneurs and individuals looking to operate in the United States:
This includes wages, salaries, bonuses, commissions, tips, and additional benefits reported on Form W-2. Even non-cash benefits can sometimes be treated as taxable.
If you provide services as a freelancer, consultant, or independent contractor, the payments you receive are taxable income. This also applies to online sales, digital platforms, and side businesses.
Profits generated by your own business—whether a sole proprietorship or a corporation—are taxable. For U.S. business entities managed from abroad, rules may differ, but the principle remains: what the business earns is considered taxable according to the type of entity and its tax treatment.
These generate several types of taxable income:
Every transaction may create a taxable event that must be properly declared.
Some payments are also considered taxable, such as:
It is crucial to know when each of these is taxable, since exceptions apply depending on the taxpayer.
People are often unaware that the following can also be taxable:
In all of these cases, the law assumes they represent an economic benefit.
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Although most income is taxable, some exceptions exist, such as certain gifts, inheritances, some insurance benefits, and scholarships covering only tuition and required materials. These exceptions are strictly regulated, so it is best to verify each case before assuming exemption.
Both individuals and foreign companies must understand what is considered taxable income in the U.S. to avoid mistakes on their returns. This is especially relevant if you:
Incorrect declarations can result in penalties, interest charges, and even loss of compliance needed to operate smoothly in the country.
Additionally, when starting a business in the U.S., understanding how income is classified helps determine:
Good organization prevents problems and simplifies annual compliance with the IRS.
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Yes, unless a specific legal exemption applies.
It depends on your tax residency and business structure.
Yes. The IRS treats them as property.
In many cases, yes.
Yes. Corporate tax obligations apply regardless of ownership nationality.
Understanding what taxable income is and how to report it is essential to avoid legal issues and ensure your U.S. operations run smoothly. If you are considering creating a business in the United States—or you already receive income from there—having expert support can make the difference between a smooth process and one full of unnecessary risks.
At Openbiz, we help you create your company in the United States and manage your administrative and tax obligations correctly. If you want to operate safely and professionally, contact us and we will guide you step by step.