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Planning Library/Cash Flow & Monthly Money
Explainer·4 min read·Swiss figures: 2026

The Emergency Fund — How Much, Where, and Why It Comes First

Three to six months of fixed expenses in liquid cash. Not invested. Not in Pillar 3a. This is the foundation every other financial decision depends on.

The shortcut: "we have plenty of money." The question the buffer answers is different: how much of your money is available — this week, without selling anything at a bad time, without asking a pension fund's permission?

A household can hold seven figures across Pillar 2, 3a, a portfolio and home equity, and still be unable to fund three months of expenses in cash. On paper, wealthy. In a liquidity event — a job change, an illness, a family emergency abroad — fragile.

How much

The working range is three to six months of your household's fixed expenses — rent or mortgage, health premiums, insurance, tax accrual, the costs that continue when income doesn't. Where you land in that range is household-specific, not universal:

  • Toward three months: two stable incomes, employer sickness coverage, no dependants, flexible costs.
  • Toward six or beyond: one income, self-employment, bonus-heavy compensation, children, cross-border obligations, a notice period shorter than your industry's typical job search.

Note the denominator: expenses, not income. A high-saving household needs a smaller buffer than its salary suggests; a high-spending one needs more. This is also why the number must be recalculated when life changes — a child, a move, a partner going part-time all reprice it.

Where

Liquid and boring: an account you can draw from in days. Not invested — the emergency that forces a sale has a documented habit of arriving in the same month markets fall. Not in Pillar 3a — locked money is not buffer, whatever its balance. Not in the mortgage — home equity is the least accessible franc you own.

Yes, cash loses to inflation. That is the premium you pay for certainty, and it's the cheapest insurance in your financial life. The buffer's job is not to grow; it's to make sure everything else can.

Why it comes first

Every other financial structure assumes the buffer exists. Invested money only earns long-run returns if it's never sold at the wrong moment — the buffer is what makes "never" possible. Property affordability calculations assume you can absorb a rate rise or a repair. Even career decisions change: a six-month buffer negotiates differently than a six-day one.

That's why "should I invest or build the buffer first?" almost always resolves the same way: the buffer is not competing with your investments — it's underwriting them.

What are you optimising for?

Once the buffer is full, stop. Cash beyond the target is a drag, not a comfort; the next franc belongs to the next goal. A buffer that quietly grows to twelve months because no one decided otherwise is a decision avoided.

Control questions: What are your household's true monthly fixed expenses — the calculated number, including off-payslip costs? How many of those months does your accessible cash cover today? And is that coverage a confirmed figure or a feeling?

This article provides educational information about the Swiss financial system. It does not constitute regulated financial, investment, pension, or tax advice. Navinua is a financial planning support tool operating outside the scope of regulated advice under FinSA/FIDLEG. Swiss figures are correct for 2026 — verify against the Navinua Assumptions Register for subsequent years.

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