Sinking Fund Planner
Example: Goal 1 amount: 3000 $ · Goal 1 months away: 12 mo · Goal 2 amount: 1500 $ · Goal 2 months away: 6 mo · Goal 3 amount: 800 $ · Goal 3 months away: 3 mo · HYSA APY on savings: 5 %
| Total monthly to all goals | $757 |
| Monthly for Goal 1 | $244 |
| Monthly for Goal 2 | $247 |
| Monthly for Goal 3 | $266 |
| Total goals combined | $5,300 |
Worked example
Saving $3,000 for a vacation in 12 months, $1,500 for holiday gifts in 6 months, and $800 for car maintenance in 3 months requires $252, $246, and $266 a month respectively — a combined $764 a month into a 5% HYSA. Interest reduces the actual total contribution needed below the face value of each goal.
Frequently asked questions
What is the difference between a sinking fund and an emergency fund?
An emergency fund covers unexpected surprises — job loss, medical bills, urgent repairs. A sinking fund covers expected future expenses you choose to save for in advance. Both are held in cash, but the sinking fund has a specific goal and deadline; the emergency fund is open-ended.
Should each goal be in a separate savings account?
Many online banks allow multiple sub-accounts (sometimes called 'buckets' or 'vaults') within one HYSA at no cost. Keeping goals in separate labeled buckets prevents accidental mixing while keeping the money in one institution. This also simplifies tax reporting — all interest appears on one 1099-INT.
What if I miss a month's contribution to a sinking fund?
Recalculate: divide the remaining gap by the remaining months. The HYSA interest partially compensates for a short pause. If you miss more than two months on a tight timeline, you may need to extend the goal date or increase future contributions.
Does the HYSA rate materially change the required monthly contribution?
At 5% APY over 12 months, interest reduces your required contribution by about 2.5% relative to saving at 0%. On a $3,000 goal that saves roughly $75. The effect is larger for longer timelines — a 36-month goal at 5% saves you about 7% in required contributions versus a 0% account.