Grab the young adult legal guide right here: So You’re 18 Guide
Brooke Hardie breaks down what actually changes the moment you turn 18 — legally, financially, and civically. She explains why your signature suddenly carries full legal weight, how everyday things like phone plans and free trials become binding contracts, how credit and interest quietly work against you, what you owe the IRS and when, and why voting and jury duty matter more than most people realize.
🗒️ Key topics
In this episode, Brooke explains that at 18, the law assumes you understood, meant to agree to, and are responsible for anything you sign — no more "minor" protections.
She breaks down real-world contract traps, including a phone plan cancellation fee and a streaming free trial that silently auto-renews.
Brooke gives a practical checklist for reading any contract before signing: term length, cost, payment frequency, and cancellation terms.
She explains how credit cards and interest work, showing how an unpaid $500 balance can quietly balloon to $650–700 over a year.
The episode covers 1099 vs. W-2 tax obligations, self-employment tax, and why 1099 earners should set aside 20-30% of income for taxes.
Brooke walks through the April 15th tax deadline, filing extensions, and why an extension to file isn't an extension to pay.
She explains how to register to vote via vote.gov and why young voter turnout has an outsized impact.
Brooke demystifies jury duty — how voir dire works, why you might be dismissed, and why serving matters even when it's inconvenient.
The episode closes with a few non-legal "adulting" habits: don't show up empty-handed, RSVP, and return borrowed items in better condition than you got them.
🔗 Resources mentioned
Grab the young adult legal guide right here: https://www.brookehardie.com/so-youre-18-ebook
Register to vote here: vote.gov
More plain English legal resources: brookhardy.com
Host: Brooke Hardie, lawyer and legal translator, host of the Life Is Legal podcast.
This conversation is educational and is not legal advice. Talk to an attorney about your specific situation.
Chapters:
00:00 – Intro: adult life is built on contracts
00:39 – Welcome to Life Is Legal + today's topic
01:13 – Disclaimer: education, not legal advice
01:40 – Turning 18: the legal "training wheels" come off
02:15 – What actually counts as a contract
03:00 – Example: the phone plan cancellation trap
03:59 – Example: the auto-renewing streaming subscription
04:56 – Why contracts also protect you
05:26 – Checklist: how to read a contract like a boss
06:43 – The financial system suddenly notices you
07:14 – Credit offers, "0% interest," and what they don't tell you
07:53 – How interest quietly grows what you owe
29:43 – Taxes: FICA, self-employment tax, and what to set aside
30:11 – Tax Day, extensions, and W-2 vs. 1099 obligations
32:36 – Voting: how to register at vote.gov
34:40 – Why your vote matters more than you think
35:39 – Jury duty explained: voir dire to deliberation
38:23 – Bonus: non-legal adulting habits
39:26 – Recap and closing thoughts