What you get
Five reasons to join
The Small Business Numbers Toolkit
Nine printable worksheets: break-even, your minimum rate, price changes, margin and markup tables, the true cost of a hire, 2026 tax set-aside, cash runway with a 13-week plan, a loan check and a monthly tracker. Download it the moment you sign up.
Quarterly tax deadline reminders
A reminder a week before each federal estimated-tax due date, so the payment never sneaks up on you.
The Groundwork Brief, once a month
One new research paper or guide, one calculator and one practical idea, in plain English. Short enough to read on your phone.
Ask Groundwork
Send us a business question. Each week we answer one in writing, with your name and business left out. Once a month, a senior member of Groundwork answers questions live in a text Q&A.
Subscriber perks
Early access to new Review papers before they're public, and $50 off your first Startup Library kit with code BRIEF50.
A look inside the toolkit
Fill it in by hand. Check it with our calculators.
Join free
Send me the toolkit
Your download starts on the next page. Have a question? Add it below, and we may answer it in a coming Brief.
Common questions
How often will you email me?
One Brief a month, plus a reminder a week before each of the four federal estimated-tax deadlines. That's it.
Is the toolkit really free?
Yes. It's an eleven-page PDF you can print or fill in on a tablet. Every worksheet has a matching free calculator on our site.
Will you share my question or my business?
No. If we answer your question, we strip out your name, your business and anything that could identify you. Answers are general information, not legal or tax advice.
Can I unsubscribe?
Anytime, with one click at the bottom of every email.