Emergency Fund: How Much Is Enough?
An emergency fund is liquid savings reserved for unplanned essential expenses — job loss, boiler failure, car breakdown, or medical cost. The standard advice is "3 to 6 months of expenses," but that range is wide enough to be unhelpful. The right number depends on your income stability, dependants, and fixed obligations.
The Baseline Calculation
Target Emergency Fund = Monthly Essential Expenses × Safety Months Safety Months: - Employed, dual income household: 3 months - Employed, single income: 4–5 months - Freelance / contractor: 6–9 months - Business owner / highly variable income: 9–12 months
Essential vs Total Expenses
The fund covers essential spending only — not your current lifestyle.
| Category | Include? | Note |
|---|---|---|
| Rent/mortgage | Yes | Core obligation |
| Council tax | Yes | Legal requirement |
| Utilities | Yes | Gas, electric, water |
| Food | Yes | Budget amount, not current spend |
| Insurance | Yes | Health, home, car |
| Debt minimums | Yes | Avoid default |
| Subscriptions | No | Cancel in crisis |
| Dining out | No | Discretionary |
| Holidays | No | Discretionary |
What-If Scenarios
Scenario 1: Dual-income employed couple, no children
Essential monthly: £2,100 | Target: 3 months → £6,300
Scenario 2: Single parent, one income, two children
Essential monthly: £2,800 | Target: 5 months → £14,000
Children increase both the essential spend and the risk of needing the fund (illness, school costs).
Scenario 3: Freelance designer, irregular income
Essential monthly: £1,900 | Target: 9 months → £17,100
Freelancers should also hold a separate tax reserve (roughly 25–30% of gross income) — this is not part of the emergency fund.
Where to Keep It
| Account Type | Access | 2025 Rate Range | Suitable? |
|---|---|---|---|
| Easy-access savings | Same day | 4.5–5.1% | Yes — ideal |
| Cash ISA (easy access) | Same day | 4.2–4.8% | Yes |
| Premium Bonds | 1–3 days | ~4.4% prize rate | Yes |
| Fixed-term bond | At term end only | 4.8–5.3% | No — too illiquid |
| Stocks & Shares ISA | Days but value varies | Variable | No — not for emergency |
Frequently Asked Questions
→ Use the Financial Crisis Simulator to check your current runway
Indicative only. Savings rates change frequently. Consult a financial adviser for personalised guidance.