Your Tax Year
Identifying your tax year is another essential element of understanding taxes for startups. You can use either the calendar year or your fiscal year as your tax year. Your fiscal year can start in any month and must end 12 months later, but a fiscal year cannot begin in January and end in December. Startups may have a short-year return for the initial filing.
Employment Taxes
Not every startup has employees at the earliest stages, but you can expect to hire at some point as your business grows. As an employer, you must collect, deposit, and report employment taxes.
Collecting Taxes
Employment taxes include what employees owe in:
Federal income tax
State income tax
Social Security
Medicare
If any employee makes more than $250,000 for married filing jointly ($150,000 married filing separately; $200,000 for other filing statuses), you must collect an additional 0.9% Medicare tax. You generally withhold those amounts based on a Form W-4 completed by each employee. At the end of the year, you should provide each employee with a completed Form W-2. Along with the taxes you collect through withholding, you must pay the employer's portion of Social Security and Medicare in addition to Federal Unemployment (FUTA) Tax from your business. These amounts are not from your employees, so you should not withhold these amounts.
Depositing and Reporting Taxes
You can remit the taxes you pay and withhold online. You'll need your Employer Identification Number (EIN) and an online account.
Independent Contractors
If you hire independent contractors, you generally need not withhold taxes. However, you will need to provide a Form 1099 to each contractor.
Excise Taxes
Excise taxes are imposed on the sale of specific goods, services, and activities. Before you begin an activity that requires you to pay excise taxes, you must register with the IRS.
Generally, you owe excise taxes on:
Fuel
Ozone-depleting chemicals (ODCs)
Certain manufacturing
Communications
Air transportation
Passenger ship voyages
Heavy trucks, tractors, and trailers
Indoor tanning services
Several credits and potential refunds may apply depending on the tax.
The manufacturing excise tax covers:
Fishing equipment
Electric outboard motors
Archery gear
Coal
Certain tires
Gas guzzlers
Vaccines
You file and pay quarterly using Form 720.
State and Local Taxes
Beyond federal taxes, you might be liable for state and local taxes since the specifics vary widely by location. Such additional taxes may include state (or local) income, sales, franchise, and property taxes. To determine what taxes you will owe, you can consult your state's website, an accountant, or a tax attorney familiar with your state's laws.