Debt consolidation works when you pick the right tool for your situation and don't run the consolidated cards back up. Here's the honest decision framework.
Usually yes if the consolidation APR is meaningfully lower than your weighted-average credit card APR. Credit card minimums are structured for the issuer's revenue, not your payoff speed — a $10K balance at 22% APR with minimum payments takes 22+ years to pay off. A 36-month personal loan at 12% APR pays it off in 3 years and saves $5K+ in interest.
Yes, often. Closing cards reduces total available credit, raising utilization on any remaining debt. It also shortens average account age. Leave them open with $0 balances. The on-time payment history on those accounts continues building positively.
Generally no. Balance transfer offers are designed to move debt FROM competitors TO the issuer, not internal debt around. Use a Citi / Wells Fargo / BofA / US Bank balance transfer card to escape high-rate Chase card debt.