Your small business can be filed with your personal tax return in most cases. If you are operating your business as a Sole Proprietor or Single-Member LLC, you may file your Income (i.e. Form1099-NEC) and expenses on a Schedule C as part of your personal tax return. There is no separate business return required unless your business structure is different than the two mentioned.
The IRS does not require quarterly business taxes. With the additional income you are earning through your business, you may be required to make estimated quarterly tax payments. This is to be sure you are paying the taxes due on the business income you are earning during the year. For more information on quarterly tax payments, please see Estimated Taxes and When to Pay Estimated taxes.
