The Finance Algorithm
§ Tool · tier 1 · independent

Credit Card Comparison Calculator.

Compare credit cards by rates, fees, rewards, and find the best match

CalculatorFree, no signupOn-deviceupd May 2026
Inputs
Your numbers
$
$2k

Pay-in-full removes interest from the equation

$
$0
%
13%
0.5
$
$150
%
20%
1.5

Math updates live as you change inputs · AI runs on submit

Awaiting inputs

Move the sliders or type in the form on the left — the math updates live as you go. Click Get AI verdict when you want a written analysis.

Not all credit cards are equal. The best card depends on how you use it - low rate cards save money if you carry a balance, while rewards cards pay off if you always pay in full.

§ Worked examples

Real-world scenarios

Low Rate vs Rewards Card

$2,000/month spend. Card A: $0 fee, 13.5% rate, no rewards. Card B: $150 fee, 20% rate, 1.5 points/$.

Inputs

spend:2,000feeA:0rateA:13.5feeB:150rateB:20

If you pay in full: Card B costs $150/year but earns ~$180 in rewards. Winner: Card B (+$30). If you carry $2,000 balance: Card A saves ~$130/year in interest. Winner: Card A.

§ FAQ

Questions Australians ask

§ Glossary

Plain-English definitions

Purchase Rate
Interest charged on purchases if balance isn't paid in full.
Rewards Rate
Points or cashback earned per dollar spent, e.g., 1 point per $1.
Point Value
What each reward point is worth - typically $0.005-0.01 depending on redemption.