Based on the information you provided ($16,000 self employed income with no deductions), here is an estimate of self employment taxes that you will pay for the year 2021.
Tax Amount :$2448
Social Security Portion :$1984
Medicare Portion :$464
Self-Employment Tax Rate :15.30%
You can claim a federal deduction for half the SE tax you pay, which can help lower your taxes.
For more information click here What is the Self Employment Tax?