The bare-bones budget: know your survival number

Somewhere underneath your regular budget is a smaller, tougher number: what it costs to keep your household fed, housed, insured, and functional with everything optional switched off. That's your bare-bones budget — your survival number — and the best time to compute it is now, when nothing's wrong. People who calculate it during a crisis do it badly, under panic, while canceling things at random. People who compute it calmly, in advance, hold a number that quietly improves a half-dozen other decisions.

What stays, what goes

• Stays: housing and utilities, groceries (cooked, not delivered), transportation to work, all insurance premiums, minimum debt payments, phone and internet, essential medical costs and prescriptions, childcare you need to work.
• Goes: restaurants and delivery, streaming and subscriptions, travel, hobbies, shopping beyond replacement basics, gym memberships with outdoor alternatives, gifts beyond token, extra debt payments above minimums, and — temporarily — savings contributions.
• Judgment calls: the second car (depends on jobs and transit), the kids' activities (one anchor activity often stays), therapy and medications (health spending is usually the last place to cut, not the first).

Computing it in 30 minutes

1. 1
   Start from three months of statements

   Real numbers, not guesses. Pull every recurring charge and spending category you actually have.

2. 2
   Sort every line: survival or optional

   Be strict — this is the everything-off version, not the slightly-trimmed version. The judgment calls get a middle column.

3. 3
   Reprice the survival lines downward where honest

   Bare-bones groceries are cheaper than your current groceries; bare-bones transportation might drop a car. Estimate the crisis version, not the current version.

4. 4
   Total it — and write it down somewhere findable

   That's the survival number. Most households land at 55–70% of their normal spending. Note the date and revisit yearly, since rent and insurance move.

What the number is for

• Emergency fund sizing: 'three to six months of expenses' means bare-bones expenses. Sizing against full lifestyle spending overshoots the target by 40% and delays every other goal.
• Job-loss runway: savings divided by the survival number is how many months you can actually last — the single most clarifying figure in any employment crisis.
• Risk decisions: evaluating a career change, a sabbatical, or a move to one income starts with 'can we cover the floor?' — a question you can only answer if the floor is a number.
• Crisis switch: the pre-written bare-bones budget is a plan you activate in one day, instead of three panicked weekends of canceling things.

If you ever have to live on it

Two things soften a bare-bones season. First, sequence the switch: cancel by renewal date rather than all at once where fees apply, and call billers — many offer hardship pauses on everything from internet upgrades to student loans, but only to people who ask. Second, keep one small joy line — $30 to $60 a month of genuinely chosen pleasure. This isn't weakness; austerity that scores 100% on paper and collapses in month two protects nothing. A floor you can actually stand on for six months beats a lower one you can't.

The bottom line

Your survival number is 30 minutes of statement-sorting that upgrades your emergency fund math, your risk decisions, and your worst-case confidence — all before anything goes wrong. Compute it calmly, write it down, refresh it yearly, and hope it stays theoretical. Knowing the floor is exactly where it is turns out to be one of the cheapest forms of peace money can buy.