Finance
Instant, private, and free
Sinking Fund Calculator.
Calculate periodic deposits required for a future target.
Set your values
Results update as you type.
FAQs
How does the sinking fund calculator work?
Enter the requested values to receive a deterministic result. No live market, tax, or jurisdiction data is inferred.
Use Cases
Plan for a large purchase
Determine how much to save each month for a big-ticket item like a new car or appliance, ensuring you have the funds ready when needed.
Example: Save for a $10,000 car in 2 years with $1,000 already saved and 3% annual growth.
Budget for irregular expenses
Set aside money monthly for annual or semi-annual bills, such as property taxes or insurance premiums, to avoid financial strain.
Example: Accumulate $2,400 for a yearly insurance premium over 12 months.
Frequently Asked Questions
- What is a sinking fund?
- A sinking fund is a savings account where you set aside a fixed amount regularly to reach a specific financial goal by a target date. It helps you plan for large expenses without taking on debt.
- How does this calculator work?
- You input your target amount, current savings, expected annual growth rate, and time horizon. The calculator computes the monthly contribution required, considering the growth on your existing savings and future deposits.
- Can I use this for any savings goal?
- Yes, it's versatile for any goal like a car purchase, vacation, home repair, or annual insurance premium. Just adjust the target amount, timeline, and expected growth to match your situation.
Tips & Common Mistakes
Tips
- Be realistic about your expected annual growth rate; conservative estimates are safer for planning.
- Start with a clear target amount and date to get an accurate monthly contribution.
- Review your sinking fund regularly and adjust contributions if your goal or timeline changes.
- Consider automating your monthly transfers to stay consistent and reach your goal on time.
Common Mistakes to Avoid
- Ignoring the growth on current savings, which can reduce the required monthly contribution.
- Using an overly optimistic growth rate that may not be achievable, leading to shortfalls.
- Forgetting to account for inflation or price increases in your target amount.
Last updated: August 13, 2026