Write it now. We'll deliver it the day the market drops.

Your calm self knows your plan. Your panicked self forgets it. Write your rules and a short letter while markets are quiet. When stocks fall 10%, 20% or 30%, we email it to you automatically, with what history says about drops like this one.

Ulysses knew he couldn't trust himself when the Sirens sang, so he had his crew tie him to the mast before the ship got close. Your letter is your mast: decided now, while you're calm.

Write my letter, free   What to do in a crash

"The time to decide what you'll do in a crash is before the crash." It's the oldest advice in investing. Tie to the Mast makes sure you actually hear it at the right moment.

How it works

1

Write while you're calm

Why you invest, what you will and won't do in a drop, and who you're doing it for. Five minutes.

2

Pick your moments

Choose the drops that should trigger delivery: 10%, 20%, 30% or 40% below the high. S&P 500, Nasdaq-100 or the TSP C Fund.

3

Hear yourself when it counts

The morning after the market crosses your line, your letter arrives, with a one-page history of past drops and how long they lasted. Copy a spouse or friend if you want backup.

Then, during and after: the Crash Companion

10%

The shock

What matters this week, what to avoid, and why doing less is usually the move.

20%

The grind

Moves that make sense no matter where the market goes next, and a plan if your job is at risk.

30%

The deep part

What history says, the scams that spike, and hope with real numbers.

Weekly

Until it's over

A short "state of the drop" every week, then a climb-back guide when the market recovers.

Free. Plain English. No predictions, no products, no "move your money now." Read the full Crash Companion guide.

Write your letter

We'll ask your partner to agree first. They only hear from us if a trigger hits.

This is exactly what you'll receive. History uses S&P 500 monthly prices since 1950 (price only); 2020 uses daily closes.

Pricing

Free

$0

  • One letter
  • One trigger level
  • History card with every delivery

Steady (coming soon)

$29 / year

  • All trigger levels (10/20/30/40%)
  • Accountability partner copy
  • Recovery letters: "you're back to the old high"
  • A yearly reminder to reread and update your rules

For organizations

Credit unions, employers, advisors

  • Offer Tie to the Mast free to members or clients
  • Your branding; their letters stay private
  • Contact us for pricing

Questions

Is this investment advice?

No. You write the rules, in your own words. We never tell you to buy, sell or move anything, and we don't send predictions or signals. We only deliver your letter and the historical record.

Who reads my letter?

Nobody, unless you add a partner. Letters are stored privately and used only to deliver them to you. Delete everything with one click from any email.

How do you know when the market drops?

Every weekday morning we check the previous close against its all-time high, using public index data. When it crosses one of your levels, your letter goes out once. It resets after the index makes a new high.

Do you make money from fund companies or advisors?

No. No ads, no affiliate links, no selling your data. Paid plans and organizations fund it.

What if the market never drops?

Then you never hear from us, except a yearly reminder (Steady plan) to reread your rules. That's a good outcome.