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Sinking Funds vs Emergency Funds: What's the Difference?

Written by

Sarah Jenkins

Dec 6, 20246 min read
Multiple savings jars for different financial purposes

If "emergency" funds keep getting used for Christmas gifts and car services, you don't have an emergency fund problem—you have a sinking fund problem. Here's the difference and why you need both.

Emergency Fund: For the Unexpected

Your emergency fund is for truly unexpected events:

  • Job loss
  • Medical emergencies
  • Unexpected major repairs
  • Family crises

Key characteristic: You couldn't have predicted or planned for it.

Sinking Funds: For the Expected

Sinking funds are for expenses that are predictable but irregular:

  • Christmas gifts
  • Annual insurance premiums
  • Car maintenance (MOT, service)
  • Holidays
  • Birthday presents
  • Back to school costs
  • Home maintenance

Key characteristic: You know it's coming; you just don't pay for it monthly.

ℹ️ The Difference

Emergency fund: "I couldn't have known this would happen" Sinking fund: "I knew this was coming, I just prepared in advance"

Why Both Matter

Without sinking funds:

  • Predictable expenses feel like emergencies
  • You raid your emergency fund for non-emergencies
  • Emergency fund never stays full
  • Actual emergencies put you in debt

With both:

  • Predictable expenses are covered
  • Emergency fund stays intact
  • True emergencies are handled
  • No financial surprise is truly surprising

Common Sinking Fund Categories

Annual/Seasonal

  • Christmas: Gifts, food, decorations
  • Holidays: Annual vacation
  • Back to school: Uniforms, supplies
  • Birthdays: Your own and others'

Maintenance

  • Car: MOT, service, tyres, eventual replacement
  • Home: Repairs, appliance replacement
  • Tech: Phone, computer replacement

Annual Bills

  • Insurance: Car, home, life
  • Subscriptions: Annual memberships
  • Professional: Fees, licenses

Set Up Your Savings Goals

Use iBudget to track multiple sinking funds alongside your emergency fund.

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How to Set Up Sinking Funds

Step 1: List Irregular Expenses

Go through the year and list everything not in your monthly budget.

Step 2: Estimate Annual Costs

How much does each category cost per year?

Step 3: Calculate Monthly Contribution

Annual cost ÷ 12 = monthly sinking fund amount

Step 4: Decide How to Track

  • Separate accounts: One for each fund
  • One account, spreadsheet tracking: Keep mental ledger
  • Budgeting app: Virtual envelopes

Example: Christmas Sinking Fund

  • Annual Christmas spending: £600
  • Monthly contribution: £50
  • January: Start saving
  • December: £600 ready, no stress

💡 Pro Tip

Start sinking funds in January when motivation is high. By December, your first Christmas fund will be fully funded and ready.

Priority Order

  • Mini emergency fund: £1,000 first
  • Essential sinking funds: Car maintenance, insurance
  • Full emergency fund: 3-6 months
  • All sinking funds: Christmas, holidays, etc.

About iBudget

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