Before you start
For US consumer credit cards. This is a notice-reading and planning guide; the agreement, reason for the increase and Regulation Z exceptions determine what can change.
Identify why the rate is changing
APR means annual percentage rate. Regulation Z §1026.9 generally requires at least 45 days’ written advance notice for significant changes, but specific exceptions apply. A change in a variable rate’s reference index is different from the issuer increasing its added margin.
| Reason shown | What to verify |
|---|---|
| Issuer changes pricing or margin | Usually a 45-day notice; first-year and existing-balance protections also matter. |
| A qualifying public reference index rises | A fresh 45-day notice generally is not required if the contractual formula operates as disclosed. |
| A disclosed promotional rate expires | A fresh 45-day notice may not be required when the prior disclosures meet the rule. |
| A required payment is more than 60 days late | A penalty increase may reach older balances, subject to notice and restoration requirements. |
Map the increase to specific balances
Under the ordinary advance-notice exception in Regulation Z §1026.55(b)(3), transactions before or within 14 days after notice generally keep the old APR. However, a transaction within those 14 days that is not charged to the account before the increase takes effect may be treated as later. Ask for transaction and posting dates. Higher interest cannot start before the effective date. Ordinary advance-notice increases also cannot occur in year one.
These protections are not a guarantee that existing balances never change. Qualifying index increases, expiration of a properly disclosed temporary rate, certain serious payment delinquencies and other defined exceptions can affect them. Ask: “Which balance stays at its current rate, which changes, and under which exception?” Request the dollar amounts and transaction categories in writing.
Separate the notice date from the spending cutoff
For a fictional pricing change after the first year, notice is provided October 1, 2026 and the increase takes effect November 15, 2026. October 15 is the fourteenth day after notice. Transactions on October 16 or later may therefore become subject to the increased APR on November 15, even if they occurred before that effective date.
Use your account’s disclosed dates, and record when notice was provided and received. Ask about discrepancies and delayed charges, including hotel holds: an authorization date may differ from the actual transaction date. Check purchases, transfers and advances separately.
Ask what choices the issuer actually offers
Do not assume every APR increase has an opt-out. The statutory rejection right for certain significant changes in §1026.9(h) does not apply to APR changes. An issuer may offer its own option; ask about the deadline, affected balances, repayment terms and whether using or closing the account affects that offer. Get confirmation before relying on it.
You can ask about a lower rate or payment assistance and consider pausing new borrowing. Keep required payments current while asking; a request does not suspend the agreement. Closing the card does not erase the balance or guarantee a frozen APR. If an explanation conflicts with the notice, preserve both and request a written correction or use the CFPB complaint process.
Estimate only the balance that will actually change
For a simple illustration, additional interest equals balance × (new APR − old APR) ÷ 100 × days ÷ 365. Use only the balance to which the new rate applies for the entire modeled period. Enter APRs as percentages: 20 and 25 mean a 5 percentage-point increase.
This assumes an unchanged balance, no payments, purchases or fees, no compounding and a 365-day divisor. It does not predict a bill or minimum payment. Actual daily balances, multiple rate categories, effective dates, grace eligibility and the issuer’s calculation method matter; the CFPB interest explanation describes these distinctions.
Fictional example: compare 20% with 25% on an eligible balance
Assume a properly disclosed promotional APR of 20% has run for at least six months and expires at the disclosed 25% rate. For this illustration, the issuer has confirmed that the remaining $1,000 is subject to 25% for the entire next 30-day period. Assume no grace period, payments, new charges, fees or compounding, and divide by 365.
At 20%, the illustration is $1,000 × 0.20 × 30 ÷ 365 ≈ $16.44. At 25%, it is $1,000 × 0.25 × 30 ÷ 365 ≈ $20.55. The difference is about $4.11 for these 30 days. If the increase applies only to future transactions, this example cannot be applied to a protected existing $1,000 balance.
Before you finish
- Record why the APR is changing.
- Mark the notice date, transaction cutoff and effective date.
- Get affected and protected balances confirmed.
- Check any issuer-offered option and its deadline.
- Estimate only applicable balances and keep required payments scheduled.
Extract the terms of your APR change
Copy the notice’s dates and terms without account numbers or personal identifiers. Use “not confirmed” where the issuer still owes an answer.
Optional notes stay in this page's memory. This worksheet does not send or save your entries. Do not enter account numbers, passwords, Social Security numbers, or other private information. Downloading or printing creates a copy you control.
Ask the issuer to resolve every unconfirmed term, then update your payment plan using only the rates that apply to each balance.
Illustrate the difference between two APRs
Compare simple interest using the same constant balance and number of days for both APRs. A negative difference means the entered new APR is lower.
Formula: constant balance × (new APR − current APR) ÷ 100 × days ÷ 365. Assumes each APR applies to the entire entered balance for every entered day. Ignores compounding, payments, grace periods, fees, changing balances, promotion terms, and issuer rounding or day-count methods. This is not a prediction of your bill or a determination that an APR change is allowed.
Use USD amounts from 0 to 1,000,000,000, with a decimal point and at most two decimal places. No commas, currency symbols, or scientific notation. APRs: 0–100%, at most two decimal places.
Questions you may have
Is no 45-day notice automatically a violation?
No. Qualifying contractual index changes and properly disclosed promotional expirations are examples of exceptions. Ask which rule applies and request the original disclosures.
Does six months of on-time payments always undo an increase?
No. For a qualifying increase after more than 60 days’ delinquency, §1026.55(b)(4) requires six consecutive on-time minimum payments starting with the first payment due after the increase takes effect. Restoration covers specified older transactions; other lawful rate changes may still apply. Ask for exact dates and affected balances.
Does a higher APR always mean I pay more purchase interest?
If eligible purchases are fully paid under an active grace period, they may still avoid interest. If you carry an affected interest-bearing balance, a higher rate generally raises its cost. Check eligibility and balance categories before calculating.