Blame the Federal Reserve, which cut interest rates in July and is widely expected to cut them again this year to help insulate the economy from the Trump administration's trade disruptions and to support the stock market.
U.S. President Donald Trump has repeatedly attacked the Fed for failing to cut rates aggressively, and has used his criticism to link the Fed's moves with outcomes of the stock market. However, while nearly all households have savings accounts, a tiny minority own the vast majority of stocks.
"There's a lot more economic certainty and thoughts of a potential economic slowdown, and that's been driving a lot of banks to cut back on what they're offering to customers," said Ken Tumin, founder of banking news site Depositaccounts.com.
Some banks didn't wait for the Fed to cut rates. Earlier this summer Goldman Sachs cut Marcus' online savings rate to 2.15% from 2.25%, while competitor Ally cut its rate from 2.2% to 2.1%. The average online-only bank now offers an interest rate of around 1.68%.
After the Great Recession, savers looking to safely store their cash and make a modest return had few, mostly terrible options. The Federal Reserve cut its benchmark interest rate to zero and kept it that way for years. It was not uncommon to see a big bank like Bank of America or Wells Fargo offer 0.02% or even 0.01% on a traditional savings account. Even online savings accounts, which typically offer rates far higher than brick-and-mortar establishments, offered only 1%.
Banks didn't have to offer enticing rates because they largely didn't need deposits. Lending slowed considerably after the Great Recession, and new regulations kept banks from lending too dangerously, so the need for deposits to fuel that lending waned.
But as the economy recovered, however, and the Fed steadily raised interest rates from near-zero to 2.50% at its highest level, banks started offering more to savers. Banks also started offering more loans, which in turn meant the competition for deposits heated up.
But that competition for deposits is now dwindling and banks are not as willing to pay for long-term deposits as they used to. For example, six months ago an average bank was willing to pay 2.24% for a five-year CD. That's declined now to 2.16%. The decline is small, but expected to continue downward.
Savers looking for new places to lock-away money and get some sort of yield should check out no-penalty CDs offered by banks like Marcus, Tumin says. While the rate is not much higher than what a customer might get in an online-only savings account, no-penalty CDs allow a customer to lock in a rate for a year.
If the Federal Reserve does cut interest rates again this year or next year, at least a saver would have locked in that higher yield and there would be no penalty for pulling the money out in most cases.
Lower interest rates have been good news for some, however. Big banks cut their so-called prime rate almost immediately after the Fed's July rate cut. That means lower interest costs for borrowers, as the prime rate is typically used to determine the interest rate on credit cards.
Mortgage rates have also declined, with the average 30-year fixed-rate mortgage now averaging around 3.81%, compared to 4.44% in March.