If you've ever thought: "I just need someone to nag me..." this is for you. CPA Nag sends brief reminders for US federal estimated tax deadlines, sent three weeks, one week, and one day before each deadline. The emails remind you to set aside time to catch up on bookkeeping, get your money in order, and actually pay. In months without a deadline email, you will get one bonus nag about a boring financial wellness task.

Brought to you by Kat Sklar, CPA, of The Friendly Spreadsheet LLC.