A savings rate can drop after you open the account. Federal rules say something about how a bank has to tell you. They say less than most people assume, at least in the public summaries reviewed for this piece.

A paper bank statement and folded disclosure schedule on a kitchen table in soft daylight, beside a mug.
A paper bank statement and schedule of deposit account disclosures outlining interest computation rules and subsequent notice standards.

The Truth in Savings Act is the law behind these disclosures. The Consumer Financial Protection Bureau implements it for banks through Regulation DD. This article sticks to what the CFPB pages show and says plainly where the readable sources stop.

What Regulation DD covers

Regulation DD is codified at 12 CFR Part 1030. It is the federal Truth in Savings rule for depository institutions. The CFPB's regulation page lays out its structure, and the section that matters for rate changes is Section 1030.5, titled Subsequent disclosures. These are notices a bank gives after an account is already open.

The rule is split into pieces, each handling one stage of an account's life. The CFPB lists them this way:

  • Section 1030.3, general disclosure requirements.
  • Section 1030.4, account disclosures.
  • Section 1030.5, subsequent disclosures, including changes in terms.
  • Section 1030.6, periodic statements.
  • Section 1030.7, interest payment.
  • Section 1030.8, advertising.
  • Section 1030.11, overdraft disclosures.

For a saver, the practical point is simple. Opening terms live in one place and later changes live in another. If your rate falls, Section 1030.5 is the part of the rule to look at first.

How the change-in-terms provision works

Section 1030.5(a) is the change-in-terms provision. The CFPB's official comment on it lists a heading for paragraph 5(a)(1), Advance notice required. That heading tells us the rule is built around notice given ahead of a change, not after it.

The CFPB publishes official interpretations that explain how Section 1030.5 applies in practice. Those comments are the place to look when a bank's notice seems odd, or when you want to know how a rule applies to a certain kind of change.

One detail is worth holding onto. The summary pages describe the advance-notice framework, but the text this review could read did not spell out the mechanics. So this article does not claim to know how far ahead of a change the notice must arrive.

What the sources here do not say

Several sources failed to load. The Federal Register page was blocked by an access check. The eCFR and Part 707 PDFs came back as unreadable binary. The NCUA and FDIC pages returned mostly navigation text. That leaves real gaps, and it is better to name them than to guess.

The sources do not give the number of days of notice a bank must provide. They do not say which changes trigger a notice, for example a variable-rate adjustment versus some other change in terms. They do not say what a notice must contain or how it must be delivered. Anyone who needs the exact figure should read the text of Section 1030.5(a) directly on the CFPB site.

Other questions are also open here:

  • Appendix A to Part 1030 covers how annual percentage yield is calculated. The sources do not explain how a rate change affects the APY shown to consumers.
  • Appendix C covers the effect on state laws. Its text was not in the sources, so whether state law adds requirements is unanswered.
  • Nothing in the sources covers how to dispute a rate change or what to do if a notice never shows up.

Credit unions and other places to check

Credit unions sit under a different rule set. The NCUA publishes a Truth in Savings Act page that points to NCUA Rules and Regulations Part 707, the credit union counterpart to Regulation DD. The page content itself did not load, so this article cannot say how Part 707 words its change-in-terms rule.

The FDIC's Consumer Compliance Examination Manual has a chapter on Truth in Savings, VI-3, last updated May 2023. That page also returned little usable text. It may be useful to a reader who wants the regulator's view, but this review did not confirm what it says about rate changes.

What to do when your rate changes

The sources do not offer consumer advice, so what follows is ordinary common sense and not a reading of the rule. Start with the notice itself. Keep it, and note the date you received it and the date the new rate takes effect.

Then compare it to your account agreement and the disclosures you got when you opened the account. Those documents should show what kind of account you have. If something does not line up, ask the bank in writing and keep a copy of the reply.

If you need a firm answer on timing, read Section 1030.5(a) itself, along with the CFPB comment. Credit union members should read Part 707 instead. Those are the primary texts, and they settle questions that summaries cannot.

Please seek a professional. This article is general information, not financial, tax or insurance advice. Please seek a licensed financial, tax or insurance professional about your own situation.