Skip to content

The sneaky credit card interest rate trap

From Aaron’s YouTube: “This seems dodgy.”

Video not loading? Watch it on YouTube

Posted 23 August 2026

The short version

  • Some credit card companies offer lower interest rates when you try to pay off your card, as an incentive to keep it open.
  • This tactic can be used strategically - the money you planned to pay off the card could instead go towards higher-interest debt.
  • While tempting, accepting a lower rate may not be the best move if your goal is to be debt-free.
  • Always verify any financial offers like this - as Aaron notes, tactics that seem 'helpful' often benefit the lender most.

The credit card company's offer

As Aaron explains, some credit card companies have a surprising response when clients try to pay off their card. Rather than happily accepting the repayment, they may offer a lower interest rate to keep the card open and the debt active. In one case, a client with a 20% rate was offered a cheaper deal when they attempted to clear their balance.

This creates an odd situation where doing the financially responsible thing (paying off debt) triggers what looks like a perk. But as Aaron points out, it's actually the bank trying to maintain their revenue stream from your interest payments. It's a 'dodgy' tactic dressed up as a favour.

When to use this to your advantage

There is one scenario where this offer could work for you. If you have multiple debts, the money you were going to use to pay off the credit card could instead be directed towards a higher-interest debt (like a personal loan). By taking the card company's lower rate, you free up cash to tackle more expensive obligations first.

However, Aaron cautions that this only makes sense if you're certain about sticking to your debt repayment plan. Many people intend to redirect the savings but get stuck in a cycle of minimum payments. The psychological win of closing an account often outweighs small rate reductions.

The smarter play

The most straightforward path is usually the best. Banks wouldn't offer these deals unless they benefited in the long run. What looks like 'saving' 5% on interest now may cost you more over time if it keeps you in debt longer.

Aaron's advice? Verify any unusual offers like this (ask in mortgage forums or groups), then stay the course. Paying off debt, especially high-interest credit cards, almost always beats playing rate negotiation games. Your future mortgage application will thank you for the clean credit history.

This is general information, not personalised financial advice. For advice on your situation, talk to Aaron.

Keep learning

One spreadsheet beats a hundred good intentions

Most people saving for a first home cannot answer two basic questions: exactly how much do I have, and exactly when will I have enough. A spreadsheet answers both.

How to budget for your first home

Work backwards: target house price, minus KiwiSaver and any help, equals the cash you still need. Divide by your weekly surplus and you have your timeline.

Bank statement red flags the lender will spot

Aaron shows a humorous, playful side in this candid video.

3 Bank Statement Red Flags That Could Slow Your Mortgage Approval

Frequent cash withdrawals make lenders question what you're spending on.

The Real Cost of Adding a Car to Your Mortgage

A $175,000 car added to your mortgage costs an extra $215/week at current rates.

How a $3,000 Loan Can Cost You Thousands

A $3,000 loan with 47.6% interest left a client paying just $300 off in 7 years.

How April's KiwiSaver Changes Affect Your Mortgage

KiwiSaver contributions rise to 3.5% (employee+employer) from 1st April 2024.

The reality of being a top 1% earner with a mortgage in NZ

Earning over $270,000 puts you in New Zealand's top 1% of income earners.

Don't forget to pay tax on flatmate or boarder income

Flatmate and boarder income is taxable and must be reported to the IRD.

Why Term Deposit Rates Are Dropping With Mortgages

Term deposit rates fall when mortgage interest rates drop.

Why cash advances hurt your mortgage approval chances

Banks view credit card cash advances as red flags because they signal you're spending money you don't have.