Unchanged for years, regardless of inflation.
There's no incentive to prompt a comparison that could cost them a depositor.
The depositor, since the institution has no reason to.
Ask Whose Incentive the Silence Serves
Charlie Munger's published emphasis on incentives argued that understanding who benefits from an outcome explains behavior better than assuming good faith alone, and why no one has an incentive to warn you a rate is falling behind inflation becomes clear once you recognize that a bank's silence on a stale rate costs it nothing and benefits its margin. For example, consider a depositor holding $22,000 in a large bank's savings account paying 0.01% APY for over three years, during which inflation averaged roughly 3.5% annually, meaning the real value of that balance quietly eroded year after year with no notice, statement flag, or prompt from the bank suggesting a better option existed. The Berkshire Hathaway letter archive documents Munger's repeated insistence that incentives, not stated intentions, predict behavior. As of July 2026, this is especially important if your bank has never proactively suggested a rate review, since that silence is itself informative about whose interest it serves.
The bank has no incentive to flag this gap. The depositor has to check.
Check Because No One Else Will
Per Poor Charlie's Almanack, understanding the reward structure behind an institution's behavior was treated as more useful than assuming its interests align automatically with a customer's. Comparing your rate against the national average of 0.38% APY or the best available 4.20% APY, using FDIC national rate data, reveals the gap directly.
| Signal | What it usually means | Next check |
|---|---|---|
| No rate-review prompt from your bank | Normal, not a sign anything's wrong on its own | Check your rate directly, don't wait for a prompt |
| Rate unchanged for 2+ years | Likely falling behind inflation | Compare against current national data |
| A large, branch-heavy bank | Often lower rates, less competitive pressure | Compare against current savings rates |
| A recent rate increase after you asked | Incentive responded to your specific action | Confirm it's now genuinely competitive |
Understanding this incentive gap has real benefits: it removes any false expectation that a bank will proactively protect your real return. The risk of waiting for a prompt that will never come, as the three-year stale-rate example shows, is real, ongoing erosion of purchasing power with no external signal to catch it. However, that said, it depends on your specific institution compared to the broader market: some banks do compete more aggressively on rate, which is exactly why a periodic, self-initiated comparison matters more than trusting any single institution's silence. If you're deciding whether to wait for your bank to improve your rate or check it yourself, choose to check it yourself on a fixed schedule if it's been more than a year since your last comparison; choose to rely on a bank's prompt only if you're certain that institution competes aggressively on rate, which is rare. This is when this matters most: any time your rate has gone unreviewed for more than a year.
Its incentive is retention at low cost, not maximizing your real return.
Don't wait for a notice that has no reason to arrive.
A stale rate is easy to spot once compared.
That's exactly why periodic comparison, not loyalty, protects your return.
When This May Not Apply
An institution that has recently and voluntarily raised your rate to a genuinely competitive level has, in that instance, acted against the general incentive described here. This is especially important to confirm directly rather than assume based on institution type alone.
What to Do Next, in 20 Minutes
- Find your account's actual current rate, not what you remember opening it at.
- Compare it against current savings rates and the national average.
- Read ask who gets paid before you take financial advice and why rising prices change your cash rate math for related frameworks.
- Read why the biggest banks pay the lowest savings rates for the institutional pattern behind this.
- Run a full Money Map check to compare your rate against the market.
Sources and Methodology
This article applies Charlie Munger's published incentives principle to household savings-rate behavior during inflation. It is educational and does not recommend any specific institution.
- Berkshire Hathaway letters· Checked 2026-07-10
- Poor Charlie's Almanack· Checked 2026-07-10
- FDIC National Rates and Rate Caps· Checked 2026-07-10
- SwitchWize methodology· Checked 2026-07-10
Next scheduled verification: 2026-10-10
Educational content from the SwitchWize Research Desk. Charlie Munger and related entities are not affiliated with or endorsing SwitchWize.
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Disclaimer
This article is educational and does not provide personalized investment, tax, legal, or financial advice. Charlie Munger, the Munger estate, Berkshire Hathaway, and related entities are not affiliated with or endorsing SwitchWize. References to public letters, speeches, and books are used for educational interpretation only.