What a Chase purchase interest charge is and when it starts

A purchase interest charge is the fee Chase adds to your balance when you carry a purchase from one billing cycle to the next. Chase calculates this charge daily based on your balance, your purchase APR, and the number of days in your billing cycle.

The charge does not start when ready. If you pay your full statement balance by the due date shown on your bill, you owe no interest on purchases. If you carry even $1 into the next cycle, Chase begins charging interest on the full unpaid amount from the day after your statement closes—not from the day you made the purchase.

The math works like this: Chase takes your average daily balance during the billing cycle, multiplies it by your purchase APR, divides by 365, and multiplies by the number of days in that cycle. The result is your purchase interest charge for that month.

Key Takeaways

  • Chase charges interest on purchases only if you do not pay the full statement balance by the due date.
  • Interest accrues daily starting the day after your statement closes, not from the purchase date.
  • Your purchase APR and average daily balance determine how much interest you owe each month.
  • Paying down your balance faster reduces the number of days interest accrues and lowers your total charge.
  • Introductory 0% APR offers on purchases mean no interest charge during that period, even if you carry a balance.

How your purchase APR affects the interest charge

Your purchase APR is the annual rate Chase uses to calculate interest. If your APR is 18%, Chase divides that by 365 to get a daily rate, then applies it to your average daily balance each day. A higher APR means a higher daily rate and a larger interest charge each month.

Your purchase APR depends on your creditworthiness when you open the account and can change over time. Chase reviews your credit periodically and may raise or lower your rate. If your rate increases, your interest charges will increase on any balance you carry going forward.

Some Chase cards offer an introductory purchase APR—often 0% for a set number of months—which means no interest charge during that period, even if you carry a balance. Once the introductory period ends, your regular purchase APR kicks in.

Why your average daily balance matters

Chase does not charge interest on your statement balance. It charges interest on your average daily balance, which is the sum of your balance on each day of the billing cycle divided by the number of days in that cycle.

If you made a $500 purchase on day 1 of a 30-day cycle and paid it off on day 15, your average daily balance would be roughly $250 (the balance was $500 for 15 days and $0 for 15 days). Chase would charge interest on $250, not $500. This is why paying down your balance mid-cycle reduces your interest charge.

If you make multiple purchases throughout the month, Chase adds them all together each day to calculate your daily balance. A purchase made late in the cycle affects fewer days and therefore lowers your average daily balance slightly compared to an early purchase of the same amount.

The difference between statement balance and amount owed

Your statement balance is what you owed on the day your statement closed. Your amount owed (or current balance) includes new purchases and payments since the statement closed. Chase charges interest only on the statement balance you did not pay, not on new purchases made after the statement closed.

This matters because you may see a lower "amount owed" than your "statement balance" if you made a payment after the statement closed. That payment reduces your current balance but does not change the interest charge on the statement balance you already carried.

To avoid any purchase interest charge, pay at least your full statement balance by the due date. Paying only the minimum payment leaves most of your balance unpaid and triggers an interest charge on that unpaid amount.

How to see your purchase interest charge on your Chase bill

Your purchase interest charge appears on your monthly statement under "Interest Charged" or "Finance Charges." Chase breaks this down by transaction type—purchase interest is listed separately from cash advance interest or balance transfer interest if you have those.

You can also see your interest charge in the Chase mobile app or on Chase.com by logging into your account and viewing your statement. The statement shows the date the interest was charged, the amount, and the APR used to calculate it.

If you want to know your interest charge before your statement closes, you can estimate it using your current balance and APR. Divide your APR by 365, multiply by your current balance, and multiply by the number of days elapsed in your billing cycle. This gives you a rough estimate; the actual charge may differ slightly based on your average daily balance.

Ways to reduce or avoid purchase interest charges

The simplest way to avoid purchase interest is to pay your full statement balance by the due date each month. If you cannot pay the full balance, pay as much as you can as soon as you can. Every dollar you pay reduces your average daily balance and lowers your interest charge.

If you have a large purchase you cannot pay off right away, consider whether a 0% introductory APR card makes sense for you. Some Chase cards offer 0% APR on purchases for 6, 12, or even 21 months. During that period, no interest charge accrues, even if you carry a balance. Once the introductory period ends, your regular purchase APR applies to any remaining balance.

Another option is a balance transfer card with a 0% introductory APR on transferred balances. If you carry a balance on another card, transferring it to a Chase card with a 0% offer can stop interest charges temporarily. Keep in mind that balance transfer cards usually charge a one-time transfer fee (typically 3% to 5% of the amount transferred).

What happens if you miss a payment

If you miss your payment due date, Chase charges a late fee and may increase your purchase APR. A missed payment also appears on your credit report and can lower your credit score, making it harder to get favorable rates on future credit products.

If your payment is more than 60 days late, Chase may explore a penalty APR, which is a higher rate than your regular purchase APR. This penalty rate can explore to new purchases as well as your existing balance. The penalty APR remains in effect until you make six consecutive on-time payments, at which point Chase may lower it back to your regular rate.

Setting up automatic payments for at least the minimum payment ensures you never miss a due date. You can set this up in the Chase app or on Chase.com under "Payments & Transfers."

Frequently Asked Questions

Does Chase charge interest on purchases if I pay part of my balance?

Yes. If you do not pay your full statement balance by the due date, Chase charges interest on the unpaid portion. Paying part of your balance reduces the amount subject to interest, but the remaining unpaid balance still accrues interest charges each month until you pay it off.

Why is my interest charge higher than I expected?

Your interest charge depends on your average daily balance, not your statement balance. If you made purchases early in the billing cycle and did not pay them off until late in the cycle, your average daily balance was high, resulting in a larger interest charge. Also, if your APR is higher than you thought, that increases the charge proportionally.

Can I get my interest charge removed or refunded?

Chase does not typically remove interest charges that were calculated correctly. However, if you believe an error was made—such as an interest charge applied after you paid your full balance on time—contact Chase customer service to review the charge. If you have been a good customer with a long history of on-time payments, Chase may occasionally waive a single interest charge as a courtesy.

Does a 0% introductory APR mean I pay no interest at all?

Yes, during the introductory period. If your card offers 0% APR on purchases for 12 months, you owe no purchase interest charge during those 12 months, even if you carry a balance. Once the introductory period ends, your regular purchase APR applies to any remaining balance, and interest charges resume.

How often does Chase calculate and charge interest?

Chase calculates interest daily based on your daily balance but charges it once per month, usually on the day your statement closes. The interest charge for the entire month appears on your next statement.