Score a sweet tax return? Resist the impulse to splurge on new stuff, and instead, shop around for a new bank account to stash your money in. That said, evaluating which checking or savings accounts have the highest interest rates, the lowest fees and charges, and the best perks can be a laborious process.

Luckily for us, WalletHub did the hard work for us: In search of the best offers, the personal finance website perused 50 popular online-only checking accounts, along with 480 savings and money market accounts from 233 online and branch-based banks and credit unions. According to them, the ones listed below can help penny-pinchers make the most of their savings.

One note: WalletHub limited their choices for best checking accounts to online-only ones, and many of their best savings account selections were also digital. If visiting a physical bank branch is still at the top of your priority list, those suggestions may not be the best options for you. However, keep in mind that by eliminating the cost of maintaining physical locations, online banks are able to provide customers with higher interest rates and lower or fewer fees—meaning they’re a good choice for those looking to avoid extra costs and grow their savings.

Best Savings Account: Salem Five's eOne Savings

Regional banks tend to have lower or fewer fees across the board, and online savings accounts tend to yield higher interest rates—which may be why WalletHub’s choice for best overall savings accounts is eOne Savings, an online savings account offered by Salem Five, a regional New England bank. It's reportedly one of the highest-yielding ones on the market, as it offers a 1.1 percent APY, or annual percentage yield. (The average APY for savings accounts is often lower than 1 percent.) Plus, there aren’t any monthly fees or withdrawal fees.

Best Checking Account for Rewards: Bank5 Connect's High-Interest Checking Account

If you’re a fan of perks, go with the High-Interest Checking Account offered by online bank Bank5 Connect. Its APY is only 0.76 percent, but for every $2 customers make in debit card purchases, customers receive one point. These points can be redeemed for gift cards, travel, or merchandise—which, at the end of the day, equates to about 0.5 percent cash back. As for fees, there’s no monthly fee or ATM withdrawal fees.

Best Online Checking Account: Consumers Credit Union's Free Rewards Checking Account

WalletHub’s choice for best online checking account is offered by a credit union instead of a bank, which may be appealing for those looking to divest from big banks for personal or political reasons. Consumers Credit Union’s Free Rewards Checking has an APY of up to 4.59 percent, plus it doesn’t charge monthly fees, nor does it require customers to maintain a minimum balance. You will, however, have to make at least 12 debit card purchases per month to score the best return. To join Consumers Credit Union, simply make a $5 one-time donation.

Best No-Fee Online Checking Account: Bank of Internet's USA X Checking Account

Fees are the bane of every account holder’s existence, but customers who sign up for the Bank of Internet’s USA X Checking don’t need to deal with monthly maintenance fees, ATM withdrawal fees, or overdraft fees. The Bank of Internet also reimburses customers for domestic ATM-owner surcharges, making it convenient (and free) to grab cash on the go.

WalletHub’s full rankings for best online checking accounts and best savings accounts are available online.