Emergency Fund Calculator

How to build your emergency savings plan

1. Enter essential monthly expenses, or fill out the optional categories and explicitly apply the breakdown.
2. Keep current emergency savings separate from any new one-time contribution.
3. Choose how many months of expenses you want to cover, then enter a monthly transfer you can sustain.
4. Use the milestones and contribution comparison to choose your next action. Review the plan when your circumstances change.

Choosing a 3, 6 or 12 month emergency fund

There is no universally correct number of months. Compare the cost of each cushion with your ability to save, income stability, independent income sources, dependants, minimum debt payments and access to support. The optional questions above provide context, not a risk score or an automatic recommendation.

The Consumer Financial Protection Bureau’s emergency fund guide describes a cash reserve for unplanned expenses or income loss. It says the amount depends on your situation and encourages setting a personal savings goal. It does not prescribe the selected months in this planner.

A worked six-month savings example

With essential expenses of $3,200 a month, a six-month target is $19,200. Current savings of $6,000 leave a $13,200 gap. A new $1,200 contribution today raises the starting balance to $7,200 and reduces the remaining gap to $12,000. At $500 per month and 0% interest, you reach the target in 24 months. Your current coverage is 1.875 months; after the initial contribution, it is 2.25 months.

Formulas & projection assumptions

Formulas and projection assumptions

• Target = monthly essential expenses × selected months. The choice is always yours (1–24 months).
• Starting balance = current savings + initial contribution. Remaining gap = max(0, target − starting balance).
• Expense coverage = balance ÷ monthly expenses. Zero expenses have no defined expense coverage, not infinite protection.
• Monthly rate = nominal annual percentage ÷ 100 ÷ 12. Each month: new balance = prior balance × (1 + monthly rate) + monthly contribution. Interest comes first; transfers arrive at month-end.
• Month zero includes the initial contribution. An already-funded goal has no waiting time. Progress is starting balance ÷ target, capped at 100%; a zero target has no meaningful percentage.
• Calculations retain interest precision between months; displayed money is rounded. Real banks may round differently. Fees, taxes, inflation, withdrawals, rate changes and expense changes are excluded. Currency selection changes display units, not exchange rates.
• Projections stop at 1,200 months (100 years). A mathematically unreachable goal is distinct from a reachable goal beyond that limit. With a negative rate, contributions may only approach a balance below or equal to your goal, never reaching it.

Educational estimates, not personal financial advice or a guarantee of savings interest, account safety or future purchasing power. This tool does not know your benefits, severance, insurance deductibles, local job market or access to family support.

Emergency fund FAQ

What belongs in essential expenses?

Include housing, utilities, food, transport, insurance, healthcare, childcare, minimum debt payments and other bills you would still need to pay during an income interruption. Separate predictable annual costs and optional spending. Every category must be a valid nonnegative amount before the breakdown can be applied; editing categories never silently replaces your expense total.

Can interest alone get me to the target?

A positive balance can grow toward the target at a positive rate even with no monthly transfers. A zero balance cannot. Positive interest is not guaranteed, so compare a 0% case too. At a negative rate, insufficient contributions can make the target mathematically unreachable.

Where should I keep emergency savings?

Prioritize ready access and preservation of cash. Compare account protections, withdrawal rules and fees, rather than relying only on an advertised interest rate. Money invested in volatile assets may not be available at its current value when needed.

What should I do when the target is reached?

Keep the money accessible, replenish it after emergencies and review the target when expenses change. Consider how further savings fit with debt repayment and other goals rather than automatically increasing this fund forever.

Does this save my plan?

No. Financial inputs are calculated in this page without storage, account connections, financial-input analytics or AI requests. Leaving or reloading the page resets the plan. General site consent controls still apply.

Continue planning

Read the Emergency Fund Guide and Emergency Fund Examples by Job Type for more context. Use the Budget Planner to find room for transfers and Debt Payoff to compare competing priorities.

Also explore Monthly Investment, the emergency fund size decision and our Calculator Methodology.