A rewards card is two products sharing a piece of plastic. One is a revolving credit contract, priced by a purchase rate, a cash-advance rate, interest-free conditions and an annual fee. The other is a loyalty scheme — points, partner transfers, lounge language — priced by earn rates that the issuer can change and by redemption tables that an airline can devalue on a Tuesday.

The brochure adds the two together and calls the sum a benefit. The quieter arithmetic subtracts. This piece is about that subtraction. It is general information for readers in Australia. It does not rank cards, and it does not tell anyone to take, keep or cancel a product. Suggesting a particular credit contract is credit assistance under the National Consumer Credit Protection Act 2009. Credit Made Simple is not an Australian credit licensee.

The fee is certain. The points are not.

An annual fee is a bill. It is charged whether or not a point is earned, and whether or not last year's points still buy what they used to. Some issuers waive it for an introductory year. That is a discount on year one. The ongoing fee is the number that has to be earned back.

Points are a currency issued by a program, not by the Reserve Bank. Their value depends on how they are redeemed. A statement-credit redemption at a fraction of a cent per point is a different currency from a transfer to Qantas Points or Velocity Points at a published ratio, used on a fare that would otherwise have been paid in cash. Gift-card redemptions sit somewhere in between, and they are often the worse deal on a cents-per-point measure.

There is no official Australian cents-per-point. Anyone who quotes a single figure is choosing a redemption. For the break-even sketches below, this piece uses labelled hypotheticals, not a league table.

Break-even maths, without a winner

The crude formula is:

break-even spend ≈ annual fee ÷ (earn rate × value per point)

Hypothetical A. Annual fee $395. Earn rate 1 point per $1 of eligible spend. The cardholder only ever redeems for a statement credit that the program values at 0.5 cents a point. Then each dollar of spend returns $0.005, and the fee is earned back at $395 ÷ 0.005 = $79,000 of eligible spend in the year. Household bills, rent and some government payments may not be eligible. Interest, if any, is extra.

Hypothetical B. Same $395 fee, same 1-for-1 earn. The cardholder transfers points to an airline program and, on a particular fare, realises a hypothetical 0.7 cents a point. Break-even spend falls to about $56,400. That 0.7 cents is not a property of the card. It is a property of one redemption on one day. A devaluation of the airline table, or a fare paid in a sale that was cheaper than the points, moves the number.

Hypothetical C. A no-annual-fee card earns nothing. Annual spend is $12,000, all cleared each month, no foreign-transaction fees. Cost of rewards on that card: $0. Cost of the $395 card, if the same $12,000 earns 12,000 points at a hypothetical 0.7 cents: about $84 of value against a $395 fee. The difference is about $311 in favour of the fee-free card, before anyone mentions interest. If the $395 card is instead used to revolve $3,000 at a hypothetical 19.99 per cent, a year of interest is in the order of $600. The points are then a footnote.

Caps matter. Many programs cut the earn rate after a threshold, or pay a poorer rate on government, tax and insurance transactions, or on BPAY. The break-even formula using the headline earn rate is an overestimate of the return.

Choosing a credit card in Australia is mostly about the credit contract. The rewards layer only changes the comparison if the fee is being earned back on redemptions the cardholder will actually make, on spend that would have happened anyway. Manufactured spend — buying points on purpose — is a different hobby, and it is how programs justify tightening the rules.

Partner transfers are a second set of terms

Australian rewards programs often offer a transfer to an airline or hotel program at a ratio. The ratio is not a right. It changes. Transfer bonuses appear and vanish. A transfer is usually irreversible. Points that have moved are then subject to the airline's expiry rules, its award-seat inventory, and its next devaluation.

Qantas Frequent Flyer and Velocity Frequent Flyer are the two domestic names that appear most often on card marketing. Neither program is run by the card issuer. A dispute about a missing mile is often a dispute with the loyalty program, not with the bank.

Taxes and carrier charges on an award ticket are paid in cash. A "free" flight that still requires $400 in charges is a discounted flight. Welcome-transfer bonuses are a first-year phenomenon. The second year is the unboosted table.

Points devalue, and they do it in daylight

Loyalty programs reduce the buying power of a point by raising the points required for a fare, a night or a gift card. They do not need a cardholder's consent. The change is usually published as a "table update". Existing balances are not grandfathered just because they were earned under an earlier table.

That is the difference between a point and a dollar in an offset account. The dollar moves with inflation. The point moves with a marketing calendar. Issuers also change earn rates on the card itself. A product that earned 2 points per dollar on supermarket spend can be rewritten to 1. The current terms, not last year's screenshot, are the input. Expiry — on the card program or after transfer — is another silent cost. Inactivity can be enough.

Insurance bundled in a card is a PDS, not a perk in a photograph

Many Australian rewards cards advertise complimentary travel insurance, purchase protection, extended warranty or rental-vehicle excess cover. The insurer is usually a separate company. The document that matters is the Product Disclosure Statement, not the card brochure.

Typical conditions, in general terms: cover may activate only if some portion of the trip or the item is paid on that card; age limits apply; pre-existing medical conditions are excluded or require assessment; adventure sports, certain countries and certain trip lengths are carved out; claims are made to the insurer, not to the bank. Some policies are built for leisure travel and treat work-related trips differently.

The useful questions are narrow. Would this policy pay on the trip actually planned? What is the excess? Does a partner travelling on a different ticket count? Is there already overlapping cover? This publication does not advise anyone to rely on card insurance or to drop a standalone policy. A bundled policy has a value of zero on a trip it would not cover, and an unknown value on a trip whose PDS has not been read. Insurance does not rebate a foreign-transaction fee.

When a no-frills card is the quieter option

A no-frills card — low or no annual fee, no lounge story, no points, or a thin earn rate — is priced almost entirely by the credit contract. For a reader who clears the balance, uses the card little, or does not redeem points at a high cents-per-point, the quieter option is often the cheaper one on the arithmetic above. For a reader who would otherwise buy travel insurance and who does redeem at a high value, the arithmetic can run the other way. Both sentences are descriptions of a calculation. Neither is a product pick.

Interest dominates rewards whenever a balance revolves. A year of 20 per cent on a few thousand dollars pays for a great many unearned lounge visits. The rewards conversation is, in that case, the wrong conversation. The interest piece and, if needed, hardship variations are the right one.

Fees also interact with closing a credit card. A card kept only because a points balance would otherwise die is a card whose annual fee is being paid as a storage charge for a depreciating token. Redeeming, transferring, or accepting the lapse are the mechanical choices. Which of those to take is personal.

A new facility is still an enquiry and an account on files at Equifax, Experian or illion. An unused high limit can lower utilisation. It can also be an unused high limit with a $400 fee attached. How Australian credit scores work is a separate explainer.

Information only

Break-even maths can be done with the current fee, the current earn rate, a conservative cents-per-point, and a truthful figure for eligible spend. If the spend number has to be inflated to make the fee look small, the fee is not small. ASIC's Moneysmart material treats rewards as a possible offset against costs, not as a reason to hold revolving credit. This masthead will not name a "best rewards card". That phrase is credit assistance. The primary documents are the credit-card terms, the rewards program terms, and — where insurance is part of the pitch — the PDS.