Saving & investing · Free calculator
Emergency Fund & Sinking Fund Calculator
Plan both your emergency fund and sinking funds in one place. Enter your expenses and savings goals to get a clear monthly savings target for each.
Multi-currency · Emergency & sinking goals · Savings timeline
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Add planned expenses — car repairs, vacations, insurance premiums, etc. The calculator includes them in your total target.
Recommendations based on your numbers and common savings benchmarks.
Compare different monthly contribution levels to see how they affect your timeline.
What Is an Emergency Fund and Why Do You Need One?
An emergency fund is cash you set aside specifically for unexpected financial shocks — job loss, medical emergencies, urgent home repairs, or sudden travel. It is not for planned expenses; that is what sinking funds are for.
Without a buffer, most people turn to high-interest debt when surprises hit. An emergency fund breaks that cycle. The rule of thumb is 3-6 months of essential expenses, but your exact target depends on your job stability, health, dependents, and monthly obligations.
Sinking Funds: The Complement to Your Emergency Fund
While your emergency fund sits untouched for true surprises, sinking funds are for expenses you know are coming — car maintenance, annual insurance, holiday gifts, or a new laptop. By saving a little each month, you avoid the stress of a large bill and the temptation to dip into your emergency stash.
Tips for building your emergency and sinking funds
Start with a 1-month mini fund if debt is high
If you are carrying high-interest debt, build a small 1-month emergency fund first, then aggressively pay off the debt before expanding to 3-6 months.
Keep emergency money liquid and separate
Use a high-yield savings account or money market fund. It should be accessible within 1-3 days but not mixed with your checking account.
Name your sinking funds so you do not raid them
Psychologically, labeled savings are harder to spend impulsively. "Car repair 2026" feels more real than "Savings account."
Automate the transfer on payday
Set up an automatic transfer the day after your salary hits. Paying yourself first removes the willpower burden and builds the habit.
Revisit your target after major life changes
New baby, new mortgage, or a switch to freelance income all change your risk profile. Recalculate your coverage every 6-12 months.
Use windfalls to accelerate, not replace, regular savings
Bonuses and tax refunds can give you a jump start, but do not let them become an excuse to skip monthly contributions.
Frequently asked questions
How much should my emergency fund be?
3-6 months of essential expenses is the standard recommendation. If you have dependents, variable income, or work in an unstable industry, aim for 9-12 months. Single earners with stable jobs can often manage with 3 months.
What is the difference between an emergency fund and a sinking fund?
An emergency fund is for unexpected events you cannot predict. A sinking fund is for planned future expenses you know are coming. Both protect you from debt, but they serve different purposes and should be tracked separately.
Where should I keep my emergency fund?
In a liquid, low-risk account — ideally a high-yield savings account or money market fund. It needs to be accessible quickly but not so convenient that you spend it on non-emergencies.
How long will it take to build my emergency fund?
It depends on your monthly savings rate and starting balance. The calculator above shows your exact months to goal based on your contribution. Even small, consistent contributions add up faster than sporadic large ones.
Should I pay off debt before building an emergency fund?
Build a 1-month starter emergency fund first, then tackle high-interest debt aggressively. Once the expensive debt is gone, redirect those payments into expanding your emergency fund to the full 3-6 month target.
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Disclaimer
This calculator is provided for general informational and educational purposes only and does not constitute financial advice. It is not affiliated with, endorsed by, or a substitute for consultation with a licensed financial advisor.
All projections — including time to goal, interest earned, and monthly needed amounts — are estimates based on the inputs you provide and assume consistent contributions and a steady interest rate. Actual results will vary.
FinToku is not a bank, broker, or financial institution and does not hold or manage your money. Use of this tool does not create any financial relationship between you and FinToku.
Free tool by FinToku · Results are indicative. Consult a financial advisor for personalized guidance.
Method, assumptions and result checks
What this tool covers: Plan both your emergency fund and sinking funds in one place. Enter your expenses and savings goals to get a clear monthly savings target for each.
Review the calculator’s worked examples, formulas, timing and exclusions in the sections below. Input units and payment frequency matter. A displayed APR is not necessarily the interest rate used by the model. Tax, investment, daily-interest and specialist loan models have different rules.
Interface and accessibility reviewed November 8, 2026. This is not a certification of current rates, tax tables or every financial statement. Verify important results against actual documents.
Monthly loan formulas and worked examples · Build questions for your lender
Plan both your emergency fund and sinking funds in one place. Enter your expenses and savings goals to get a clear monthly savings target for each.
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