Olivia started working last year. by april 15th, she will need to prepare and send the federal government
a personal budget
income tax documents
a letter
financial forms

income tax documents

Explanation:

The IRS will officially open the 2020 tax season on January 27 and you have until April 15 to file your 2019 federal tax returns. It is never a good idea to wait until the last day to file your income tax returns since any type of unexpected event may prevent you from doing so, e.g. you get sick, have to travel, etc. If you file your taxes late, you will receive a penalty by the IRS and no one likes to be fined and lose money.