Status: checked against official sources; automated independent review
FREQUENT FLYER GLOSSARY
What is an interest-free period?
Interest-free period — also called a grace period or interest-free days — is the window between a card purchase and the payment due date on the statement that carries it, during which the purchase costs nothing in interest provided the statement balance is settled in full. HSBC UK states the rule directly: there is no interest on any balance cleared by the payment due date, and interest is charged on any balance left unpaid after it. [2]
Facts checked: 18 October 2026
Key takeaways
- The interest-free period runs from a purchase to the payment due date and stays interest-free only if the statement balance is cleared in full; interest applies to whatever is unpaid after the due date. [2]
- Length is set card by card, not market by market: CommBank quotes up to 55 days on two of its cards and up to 44 days on two others, and lists the period as not applicable on two cards carrying a 0% purchase rate. [3]
- Cash withdrawals sit outside it: HSBC UK adds interest on cash withdrawals daily until the balance is repaid. [2]
- 0% windows advertised on balance transfers and on purchases are promotional terms attached to one card product, with their own start dates, deadlines and exclusions. [1]
How does an interest-free period work?
A card account moves in repeating billing cycles. Transactions are gathered onto a statement, the statement carries a payment due date, and any purchase sitting on it can be settled by that date without interest being added. Because a purchase made just after a statement closes waits a full cycle before it appears, while one made just before the close appears almost immediately, the same account can give a long or a short run-up depending on the day of the month — which is why issuers quote the period as "up to" a number of days rather than a fixed figure.
The period holds only while nothing is owed. HSBC UK says there is no interest on any balance cleared by the payment due date, and that interest is charged on any balance left unpaid after the due date, showing on a later statement. [2] A part-payment, including a minimum payment, therefore ends the interest-free treatment for whatever remains, and the APR on the card takes over on that amount. [2]
How long is the interest-free period on purchases?
There is no single figure across the market. CommBank publishes a stated period for each card, and the number varies within its own range as of 18 October 2026:
| Card | Interest-free period on purchases | Purchase interest rate |
|---|---|---|
| Low Rate credit card | Up to 55 days | 10.99% p.a. to 15.99% p.a. |
| Low Fee credit card | Up to 55 days | 20.99% p.a. |
| Smart credit card | Up to 44 days | 20.99% p.a. |
| Ultimate credit card | Up to 44 days | 20.99% p.a. |
| Interest-free Low Fee credit card | Not applicable | 0% p.a. |
| CommBank Neo card | Not applicable | 0% p.a. |
The two CommBank cards listed without an interest-free period are also the two it lists with a 0% p.a. purchase interest rate. [3]
Other issuers describe the same idea in different units. Barclaycard quotes its 0% purchase offers in months from account opening rather than in days: three months on several Platinum cards, up to 21 or up to 24 months on the Platinum cards built around purchases, and six months on the Amazon Barclaycard for new customers. [1] In the United States, Capital One advertises introductory pricing as a low intro APR for a number of months — 15 months on its Quicksilver Rewards and VentureOne Rewards cards and 12 months on Savor Rewards. [4] Day counts and month counts therefore belong to the individual issuer and card, and the figures above apply only to the products named. [1] [3] [4]
Do cash advances and balance transfers get one?
The routine interest-free period is a term attached to purchases. A cash advance works differently: HSBC UK says interest on cash withdrawals is added daily until the balance is paid off, so a withdrawal starts costing interest from the day it is made instead of waiting for a due date, and the bank notes that withdrawing cash on a credit card usually carries a charge as well. [2]
Payment order can quietly shorten the purchase benefit. HSBC UK applies payments first to interest, charges and fees, then to cash advances, then to instalment plans, then to purchases, then to balance transfers; within a category it clears the highest interest rate first and, where rates match, the oldest transactions first. [2] Under that order a cash advance balance on the account is repaid before the purchase balance.
A balance transfer is normally borrowed money from the day it lands, so it gets no grace period of its own. What issuers do sell is a promotional 0% window. Barclaycard, for example, advertises 0% interest on balance transfers for up to 36 months on its Platinum up to 36 month balance transfer card, charged a 3.15% transfer fee, provided the transfer is made within 60 days of opening the account; the 0% runs from the account opening date rather than from the transfer. [1] HSBC UK likewise describes a balance transfer as a way to reach a lower interest rate or an interest-free period, subject to approval and to a fee that may apply. [2] Those windows are promotional terms of the specific card, not a general rule for transfers. [1]
Exceptions and limits
- Excluded transaction types. Barclaycard's 0% purchase offer on its Platinum up-to-24-month purchase card excludes foreign currency and some cash-like transactions, and is for new customers only. [1]
- Cash advances blocked entirely. CommBank blocks cash advances on its Interest-free Low Fee card and its Neo card, with exceptions, and excludes cash advances from eligible spend under its cashback offers. [3]
- Introductory rates end. At HSBC UK, when an introductory rate ends the balance moves to the standard interest rate. [2]
- Fees still apply. HSBC UK says balance transfers are subject to approval and that balance transfer fees may apply. [2] Barclaycard charges 3.15% on each transfer to its up-to-36-month Platinum card and 0% on its up-to-12-month card, with terms applying. [1]
- Scope. The figures here are the issuers' published terms for their own markets as of 18 October 2026 and do not transfer to other issuers, other cards or other markets. [1] [3] [4]
Frequently asked questions
Does an interest-free period apply if I only pay the minimum?
No. HSBC UK charges interest on any balance left unpaid after the payment due date, so only a cleared statement keeps the purchases interest-free. [2]
Do cash advances get an interest-free period?
Not at HSBC UK, where interest on cash withdrawals is added daily until the balance is repaid rather than waiting for the due date. [2]
How many days is the interest-free period?
It depends on the card: CommBank quotes up to 55 days on its Low Rate and Low Fee cards, up to 44 days on its Smart and Ultimate cards, and no period on its Interest-free Low Fee and Neo cards. [3]
Can I get 0% interest on a balance transfer?
Barclaycard advertises 0% interest on balance transfers for up to 36 months on one Platinum card, with the transfer made within 60 days of account opening and a 3.15% fee charged. [1]
Do 0% purchase offers cover everything I buy?
Not necessarily. Barclaycard's 0% purchase offer on its Platinum up-to-24-month purchase card excludes foreign currency and some cash-like transactions. [1]
Sources
Sources accessed on 18 October 2026. It covers published card terms from Barclaycard and HSBC UK in the United Kingdom, CommBank in Australia and Capital One in the United States; other issuers, including American Express, Chase and Citi, are not covered here.
- Barclaycard credit cards and 0% offer terms, checked 18 October 2026
- HSBC UK credit cards and card payment FAQs, checked 18 October 2026
- CommBank credit cards and card terms, checked 18 October 2026
- Capital One credit cards and rate information, checked 18 October 2026