A spank bank is a personal savings account you keep separate from your main checking account, usually at the same bank or a different one, to hold money for a specific short-term goal.
The term is informal slang—not an official banking product. Banks do not advertise accounts as "spank banks." Instead, you create one by opening a second savings account and using it deliberately for one purpose: to accumulate cash for something you plan to buy or pay for soon, usually within a few months to a year or two.
The money sits in a real savings account earning whatever interest rate that account offers. You fund it by transferring money from your checking account on a regular schedule—weekly, biweekly, or monthly—and you do not touch it until you reach your goal or the time comes to spend it. The appeal is psychological and practical: keeping the money separate makes it harder to spend on something else, and watching the balance grow gives you a concrete sense of progress toward the goal.
Key Takeaways
- A spank bank is simply a second savings account you open at your bank and use to save toward one specific goal, separate from your everyday money.
- You fund it by transferring money regularly from checking and leave it untouched until you reach your target amount or the planned spending date arrives.
- The account earns whatever interest rate your bank pays on savings accounts, which varies by bank and account type but is typically low.
- The real benefit is behavioral: keeping money in a separate account makes it psychologically harder to spend on impulse purchases.
Why people use a separate savings account for one goal
Keeping all your savings in one account makes it easy to dip into the balance for things that were not part of the original plan. A car repair comes up, or you see something you want, and the money is right there. By moving money into a separate account with a different account number, you add friction—you have to actively transfer it back to checking before you can spend it, which gives you time to reconsider.
The second reason is visibility. Watching a dedicated account balance climb toward a target—whether that is $2,000 for a vacation or $5,000 for a laptop—creates a sense of momentum that a single large savings balance does not. You can check the progress without seeing all your other money at the same time.
How to set up a spank bank at your current bank
Log into your online banking portal or call your bank's customer service line. Ask to open a new savings account. You will need to choose an account type—most banks offer a standard savings account, a money market account, or a high-yield savings account. The difference is mainly the interest rate: high-yield accounts pay more, but may require a higher minimum balance or limit how many withdrawals you can make per month.
Once the account is open, you will have a new account number. Set up an automatic transfer from your checking account to this new savings account on whatever schedule works for you—$50 a week, $200 a month, whatever amount you can afford. Most banks let you schedule these transfers for free through their website or app. Name the account something that reminds you of the goal: "Vacation Fund" or "Car Down Payment" or "Holiday Gifts."
Do not set up a debit card for this account. The whole point is to make the money slightly harder to access. If you need to withdraw it, you will have to log in and transfer it back to checking first, which is a small but real barrier to impulse spending.
Interest rates and what you will actually earn
A standard savings account at most large banks pays between 0.01% and 0.05% annual interest, which means on a $2,000 balance you would earn roughly $0.20 to $1 per year. That is not meaningful. A high-yield savings account at an online bank or credit union typically pays between 4% and 5% annually, which on $2,000 would be $80 to $100 per year.
The interest rate matters more the longer the money sits and the larger the balance. If you are saving $500 a month for a year at 4.5% interest, you will earn roughly $30 in interest by the end. It is not life-changing, but it is real money you did not have to work for. Check your bank's current rates before you open the account—rates change frequently, and online banks often pay significantly more than brick-and-mortar banks.
When a spank bank makes sense and when it does not
A spank bank works well for goals that are concrete and near-term: a vacation six months away, a down payment you plan to make within a year, holiday shopping, a birthday gift for someone, or a planned home repair. The timeline is short enough that you stay motivated, and the goal is specific enough that you know when to stop saving and start spending.
It makes less sense for long-term goals like retirement or a house down payment five years away. For those, you want an investment account that can grow faster than a savings account, and you want professional guidance on how to allocate the money. A spank bank is also unnecessary if you have strong discipline and can leave money alone in a single savings account without touching it.
Moving money out when you reach your goal
When the time comes to spend the money, transfer it back to your checking account. This usually takes one to three business days, depending on your bank. If you need the money immediately, some banks let you withdraw cash at a branch or ATM on the same day, though you may pay a fee if you use an out-of-network ATM.
After you spend the money, you can close the account or leave it open and start saving toward a new goal. Closing an account takes a phone call or a visit to your bank's website. There is no penalty for closing a savings account, and it does not affect your credit score.
Frequently Asked Questions
Can I have multiple spank banks at the same time?
Yes. You can open as many savings accounts as you want at your bank. Some people keep one for vacation, one for holiday gifts, and one for car maintenance. Each account earns interest separately, and you can name them to keep track of what each one is for.
What happens if I need the money before I reach my goal?
You can withdraw it anytime—it is your money. There is no penalty for taking money out of a savings account early. You simply lose the interest you would have earned on that amount. If you withdraw before reaching your goal, you can restart the account and begin saving again.
Is a spank bank the same as a sinking fund?
They are the same concept with different names. A sinking fund is the formal term used in personal finance; a spank bank is the informal slang version. Both mean a separate account where you save money toward a specific goal by making regular deposits.
Do I need to report a spank bank to the IRS?
No. A spank bank is just a regular savings account at your bank. You do not report the account itself. If the account earns interest of $10 or more in a year, your bank will send you a 1099-INT form, and you report that interest as income on your tax return—but that is true for any savings account, not just a spank bank.
What is the best bank to open a spank bank at?
The best choice depends on the interest rate and whether you want the convenience of a branch. Online banks typically pay higher interest rates on savings accounts. If you value in-person service, a local credit union or your current bank may be more convenient, even if the rate is lower. Compare rates at a few banks before you decide.