Emergency Fund Stress Test

The common rule is three to six months of essential expenses. The honest answer is more nuanced: a dual-income household with stable W-2 jobs and good insurance can often run safely at three months. A freelancer or commission-based worker with variable income probably needs six to nine. A single-income household with kids and a mortgage usually wants closer to the six-month line.

Affordly's stress test isn't dogmatic about the target — it shows you where you are and lets you set the floor that fits your reality.

When you're sizing a buffer, you don't have to fund your full current lifestyle. The realistic question is: if income paused tomorrow, what would you have to keep paying? That usually means rent or mortgage, utilities, groceries, insurance, transportation, minimum debt payments, and the cost of childcare or healthcare you can't pause.

Subscriptions, dining out, entertainment, and discretionary travel are not in that base number. Affordly distinguishes between fixed and flexible expenses so the stress test reflects what you'd actually need in a real squeeze, not your peak-month spending.

After you add a purchase, Affordly shows the before-and-after months of coverage. Above three months: green. Between one and three: yellow, with a recommendation to plan a rebuild window. Below one month: red, with a recommendation to delay or downsize the purchase.

The score is designed to be conservative without being alarmist. The point is to make the trade-off concrete, not to talk you out of every purchase.

If a purchase drops your buffer below your floor, the next question is how long it takes to rebuild. Affordly uses your real monthly savings rate to estimate the rebuild window. Often the answer is shorter than the buyer expects — three to six months instead of a year — and the verdict shifts from red to yellow once that's visible.

If the rebuild window is longer than nine months, that's a strong signal to either delay the purchase, reduce it, or find a cheaper path to the same goal.