Is it better to pay IRS tax debt with a credit card or set up a payment plan?

Comparing the two options requires looking at interest rates and fees. IRS installment agreements charge 0.25-0.5% per month in penalties plus ~7-8% annual interest, totaling roughly 10-14% annually. Credit cards typically charge 18-29% APR. Purely on interest, the IRS payment plan is almost always cheaper. However, credit cards offer some advantages in specific situations: paying with a credit card stops the failure-to-pay penalty immediately, removes the possibility of liens and levies, and can be useful for small balances under $5,000 where the IRS processing fee ($31-$225 for installment agreements) adds up proportionally. IRS-approved payment processors charge 1.85-1.98% per transaction. For most taxpayers with significant debt, the IRS installment agreement is the better choice. The IRS Direct Debit Installment Agreement (DDIA) also prevents lien filing on balances under $25,000 and reduces the monthly penalty to 0.25%. A third option: a personal loan at 8-12% may be cheaper than both if you qualify.