Is the Citi Best Buy Credit Card Actually Worth It? the Hidden Financing Catch
Retail sales staff market promotional financing as "no interest for 12, 18, or 24 months." That phrasing obscures a fundamental difference between true zero-percent intro APR credit cards and deferred interest financing. A genuine zero-percent credit card waives interest during the introductory window; any debt left when the promotional clock expires simply begins accruing interest moving forward.
The Citi-issued Best Buy card operates on deferred terms. Citibank tracks interest in the background from the date of transaction at the prevailing store credit card APR, currently sitting at 31.49% variable. If a cardholder finances a $1,800 home theater system over 12 months and leaves a balance of even $15 unpaid on day 366, Citibank applies retroactive interest against the entire original balance running back to the purchase date. The resulting charge can instantly add $350 to $500 to the statement.
The minimum monthly payments displayed on monthly billing statements exacerbate this hazard. Citibank calculates minimum dues using regulatory balance percentages rather than dividing the financed balance evenly across the promotional months. Paying solely the minimum requested by the statement will leave an active balance at the deadline, directly triggering the full deferred interest penalty.