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What Is a Savings Stack?
Level One: Lay the Foundation
Level Two: Set Goal-Specific Savings
Level Three: Go Beyond the Basics
Level Four: Maximize Your Rate
Level Five: Play the Long Game
Building Your Savings Stack
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Most people approach savings the same way. They open an account, make an initial deposit, and assume their work is done. Maybe they shop around for the best rate first. Maybe they don't. Either way, their money goes into one account and just sits there.
While it guarantees a modest return, that approach leaves a lot of money on the table.
Savers who consistently get more out of their money save smarter by spreading their dollars across multiple account types, each with a specific goal. Yes, the interest rate matters, but it's only one part of the total calculation. If you’re going to follow their example, you’ll want to think about accessibility, time, and taxes as well. Balance those factors well, and your financial future starts to shape up nicely.
This approach is known as a savings stack. Here's how to build one.
What Is a Savings Stack?
A savings stack is an intentional arrangement of savings accounts, each serving a different purpose. Think of it as levels: the foundation handles the unexpected, the middle levels build toward specific goals, and the top level puts long-term money to work at the best available rates.
The key word is intentional. When you follow this strategy, you won’t just open random accounts for the sake of variety. You’ll want to understand what you want to accomplish and match your goal to the account built for that job.
The order matters too. Each layer depends on the one below it. Putting money into a high-rate certificate before the emergency fund is in place isn't just a more aggressive savings strategy. It's a risky move that leaves you one unexpected expense away from paying a penalty to access your own money. You want your savings stack to be stable, and that starts by laying a strong foundation.
Level 1: Lay the Foundation
Every stack begins with a basic savings account that works as an emergency fund. Building a financial cushion is the first priority before anything else in the stack makes sense.
The rate on a basic account is typically the lowest of any account type, and that's fine. Emergency savings aren't supposed to be optimized for return. They have one job: being there when you need them.
Most financial planners recommend keeping three to six months of living expenses in an accessible account. For single-income households or anyone with variable income, more is better. This layer doesn't earn much. What it does is protect every other layer. Without it, a job loss or a major repair doesn't just cost money. It unravels everything above it.
At Spero Financial, opening a basic savings account also opens your credit union membership, which gives you full access to every other account type in the stack.
Level 2: Set Goal-Specific Savings
With the foundation in place, the next layer is all about purpose. Club accounts (Christmas Club, Vacation Club) exist for shorter-term expenses that are predictable but easy to forget about. Think holidays and vacations. You know they’re coming, and you also know you’ll want the money to be there when the time comes.
These specialized accounts work by separating earmarked money from the rest of your savings. You contribute throughout the year, earn modest interest, and draw the balance when the goal arrives. The whole point of these savings is that they let you set aside funds that will be available for stress-free spending.
This layer may not seem like a big deal, but it reinforces the habit of giving every dollar a job before you need it. And that’s a habit that pays dividends (pun intended) now and in the future.
Level 3: Go Beyond the Basics
With your foundation in place and goal-specific savings in process, money market accounts become worth looking at. These accounts pay more than basic savings through tiered rates. The more you keep in your account, the better your interest rate. Most offer some access flexibility through check-writing or a debit card, so they’re more versatile than term share certificates — we’ll talk about those in a minute — while still letting you earn more than basic savings.
The tradeoff is the minimum balance requirements. Money market accounts typically require more to open and more to qualify for the top rate tier. Because of this, they make the most sense for savings that come after your emergency fund is fully stocked.
Money market accounts are where the credit union difference really shines. Since credit unions are member-owned rather than stockholder-driven, earnings come back to members through better rates, lower fees, and lower loan costs. That structural advantage tends to be most visible in money market accounts and certificates, where credit unions consistently outperform traditional banks.
Worth Knowing: Federally insured credit unions are protected by the NCUA up to $250,000 per depositor, per account category. That's the same protection the FDIC provides for bank deposits.
Level 4: Maximize Your Rate
Now it’s time to talk about term share certificates. This is where the highest rates in the stack live, and where the access/interest tradeoff becomes the most obvious.
Term share certificates (the credit union equivalent of a CD) offer fixed rates higher than any open-access account. To gain these rates, you have to give up the easy access of other accounts. With a certificate you commit to leaving the money in for a set term. Withdrawing early triggers a penalty that can wipe out the dividends you've earned. For money that doesn't need to be touched, that tradeoff is worth it.
A few things worth understanding before opening a certificate:
- Terms typically run from a few months to several years. Longer terms generally pay higher rates.
- Early withdrawal penalties vary, but they can be significant. Confirm the terms before committing.
- Laddering reduces the liquidity risk. Open multiple certificates with staggered maturity dates so one is always coming due, giving you periodic access without sacrificing the rate on the rest
Spero term share certificates start at $500, with terms ranging from 6 to 48 months.
Worth Knowing: Our Save to Win account is a prize-linked version of a term share certificate: a 12-month certificate with a $25 minimum where every $25 saved earns an additional entry into monthly and quarterly drawings with prizes up to $5,000. The upside is that your principal is protected, and you earn dividends even if you don’t win the drawing. For savers building the certificate habit, it's an entry point that adds a little fun to the process.
Level 5: Play the Long Game
Individual Retirement Accounts are the most specialized layer in the stack, and the one where time, not the interest rate, is your most powerful multiplier.
IRAs are designed for long-term retirement savings, and they offer tax advantages you won’t find with any other account type. A Traditional IRA may let you reduce taxable income now, with taxes owed on withdrawals later. A Roth IRA works the other way: contributions are made with after-tax dollars, but growth and qualified withdrawals are tax-free. The best option depends on where you expect your tax situation to land in retirement, and that’s hard to predict. That’s why many people hold both types of IRA at different stages of their careers.
What matters most here is compound interest over time. The earlier your money goes into an IRA, the more decades it has to grow. A dollar invested at 25 does significantly more work than a dollar invested at 45, even at identical rates. That dynamic makes this layer time-sensitive in a way the others aren't, which is why financial planners consistently emphasize starting early over starting perfectly.
Building Your Savings Stack
The savings stack reframes the question most people ask about savings accounts. Finding the highest rate becomes secondary to putting the right system in place. Following this approach will make sure your savings are accessible when they need to be and locked at a higher rate when they’re not.
That system looks different for everyone. Some people are still building layer one. Others have most of the stack in place and are looking to optimize what they already have. The secret to a successful stack is knowing where you are and what comes next.
Spero has been helping South Carolina families build savings strategies for more than 90 years. If you want to talk through your situation and see what the next layer looks like for you, we're here for that conversation. Take a look at our savings accounts online, or stop in. We'll figure it out together.
This material is for educational purposes only and is not intended to provide specific advice or recommendations for any individual.
