Calculating pay off for credit card with multiple APRs
"@Joe's original answer and the  example with proportionate application of the payment to the two balances is not quite what will happen with US credit cards. By US law (CARD Act of 2009), if you make only the minimum  required payment (or less), the credit-card company can choose which part of the balance that sum is applied to. I am not aware of any company that chooses to apply such payments to anything other than that part of the balance which carries the least interest rate  (including the 0% rate that ""results"" from acceptance of balance transfer  offers). If you make more than the minimum required payment, then the excess must, by law, be applied to paying off the highest rate balance. If the highest rate balance gets paid off completely, any remaining amount must be applied to second-highest rate balance, and so on.  Thus, it is not the case that that $600 payment (in Joe's example) is applied proportionately to the $5000 and $1000 balances owed. It depends on what the required minimum payment is. So, what would be the minimum required payment? The minimum payment is the total of (i) all finance charges incurred during that month, (ii) all service fees and penalties (e.g. fee for exceeding credit limit, fee for taking a cash advance, late payment penalty) and other charges (e.g. annual card fee) and (iii) a fraction of the outstanding balance that (by law) must be large enough to allow the customer to pay off the entire balance in a reasonable length of time. The law is silent on what is reasonable, but most companies use 1% (which would pay off the balance over 8.33 years).  Consider the numbers in Joe's example together with the following assumptions: $5000 and $1000 are the balances owed at the beginning of the month, no new charges or service fees during that month, and the previous month's minimum monthly payment was made on the day that the statement paid so that the finance charge for the current month is on the balances stated). The finance charge on the $5000 balance is $56.25, while the finance charge on the $1000 balance is $18.33, giving a minimum required payment of $56.25+18.33+60 = $134.58. Of the $600 payment, $134.58 would be applied to the lower-rate balance ($5000 + $56.25 = $5056.25) and reduce it to $4921.67. The excess $465.42 would be applied to the high-rate balance of $1000+18.33 = $1018.33 and reduce it to $552.91. In general, it is a bad idea to take a cash advance from a credit card. Don't do it unless you absolutely must have cash then and there to buy something from a merchant who does not accept credit cards, only cash, and don't be tempted to use the ""convenience checks"" that credit-card companies send you from time to time. All such cash advances not only carry larger rates of interest (there may also be upfront fees for taking an advance) but any purchases made during the rest of the month also become subject to finance charge. In other words, there is no ""grace period"" for new charges, and this state of affairs will last for one month beyond the first credit-card statement whose statement is paid off in full in timely fashion. Finally, turning to the question asked, viz. "" I am trying to determine how much I need to pay monthly to zero the balance, ...."", as per the above calculations, if the OP makes the minimum required payment of $134.58 plus $1018.33, that $134.58 will be applied to the low-rate balance and the rest $1018.33 will pay off the high-rate balance in full if the payment is made on the day the statement is issued. If payment is made later, but before the due date, that $1018.33 will be accruing finance charges until the date the payment is made, and these will appear as 22% rate balance on next month's statement. Similarly for the low-rate balance. What if several monthly payments will be required? The best calculator known to me is at https://powerpay.org (free but it is necessary to set up a username and password).  Enter in all the credit card balances and the different interest rates, and the total amount of  money that can be used to pay off the balances, and the site will lay out a payment plan.  (Basically, pay off the highest-interest rate balance as much as possible while making minimum required payments on the rest). Most people are surprised at how much can be saved (and how much shorter the time to be debt-free is) if one is willing to pay just a little bit more each month." The first thing you need to do is look at your terms and conditions of your credit card, or ask your bank, how they will apply the payments.  As Dilip notes in his answer, in the US, they will likely apply the minimum payment to the lower rate balance, and then must apply the rest above the minimum to the higher rate balance.  In other countries, this will vary by law and custom.  Do not assume it will pay off the higher balance, or proportionally, without asking. Let's take the following example. You owe $6000.  $5000 is at 13.5% (normal purchase rate) and $1000 is at 22% (cash advance rate).  If your bank applies payments to both balances proportionally, then a payment of $600 will reduce your purchase balance by $500 and your cash advance balance by $100. The average APR, then, is simply sum of the product of the APR times balance.  So here, (.135*5000 + .225*1000)/6000 = 15%.  This is called a weighted average. If the bank applies the payment differently - such as to the lower rate first, or some specified part to the lower rate and the rest to the higher rate - then this will be misleading if you enter it into a calculator, because your average APR will rise over time as you pay off the purchase balance but don't pay off the cash advance balance, or may decrease if the opposite happens. The weighted average is probably reasonably close in the circumstance that you describe, even if you have rules applying the balance differently, so long as they don't 100% pay down the lower rate - so it may be the simplest option for you in terms of rough calculations (where it's not critical to be correct, just close). One approach using the online calculators that might be better, is to treat these like two separate loans/cards.  Many calculators exist for multiple balances.  Then you can allocate funds differently to the two 'cards'.  This would allow you to see how long you will need until you've paid off the higher balance, for example, although it probably won't perfectly match things - unless you find a site that has this specific option available you probably will have to either live with a small error in your calculations or do the math by hand.
As long as you can be trusted with a Credit Card i find that if you have a setup that uses three accounts: 1. your Credit Card, 2. 2. a high interest internet account (most of these accounts don’t have fees), 3. a savings account.  The Method that works for me is: 1st i calculate my fixed monthly bills i.e Rent and utilities and then transfer it into my high interest account.  for the month whenever i make a purchase i transfer the money into the high interest account ( this way I can keep a running balance of what money I have left to spend in the month. Then when the Credit Card bill comes I transfer the money out of the high interest account across to pay off the Credit Card ( this way you generate interest on the money which you would have spent throughout the month and still maintain $0 of interest from the Credit Card) over a year you can generate at least enough money in interest to go out for dinner on one of free flights! You can take a out loan against your 401k, which means you won't be penalized for the withdrawal. You will have to pay that amount back though, but it can help since the interest will be lower than a lot of credit card rates. You could refinance your home if you can get a reasonable interest rate. You could also get a 0% APR balance transfer credit card and transfer the balance and pay it off that way. There are a lot of options. I would  contact a Credit Counselor and explore further options. The main objective is to get you out of debt, not put you more in debt - whether that is refinancing your mortgage, cashing in an annuity, etc. One way to analyze the opportunity cost of using a 401K loan would be to calculate your net worth after using a 401K loan.  If your net worth increases then the 401K loan would be advisable.  Note that the calculations provided below do not take into account tax considerations. A net worth calculation is where you add all your assets and then subtract all your liabilities.  The resulting number is your net worth. First, calculate the net worth of not taking the loan and simply paying the credit card interest.  This means you only pay the interest on the credit card.  In addition to the parameters identified in your question, two additional parameters will need to be considered: Cash and the market rate of return on the 401K. Scenario 1 (only pay credit card interest): After 12 months all you have paid is the interest on the credit card.  The 401K balance is untouched so it will hopefully grow.  The balance on the credit card remains at the end of 12 months. Scenario 2 (use 401K loan to pay credit card balance): You borrow $5,000 from your 401K to pay the credit card balance.  You will have to pay $5,000 plus the 401K interest rate back into your 401K account. Use the following equation to determine when Scenario 2 increases your net worth more than scenario 1: Thus, if your credit card interest rate is greater than the rate you can earn on your 401K then use the 401K loan to pay off the credit card balance. Another scenario that should be considered: borrow money from somewhere else to pay off the credit card balance. Scenario 3 (external loan to pay credit card balance): You borrow $5,000 from somewhere besides your 401K to pay off the credit card balance. The following is used to determine if you should use an external loan over the 401K loan: This means you should use an external loan if you can obtain an interest rate less than the rate of return you can earn on your 401K.  The same methodology can be used to compare Scenario 3 to Scenario 1. $3,500 isn't usually enough to make a difference when calculating credit for a car loan. The other factors that you didn't mention are the important factors. How much money do you make? What is your credit score? Do you have balances on credit cards? The only way you can know is to look at your credit score and/or apply. I would generally recommend you buy a 3-4 year old car rather than a new car. With the lower purchase price you can pay it off quickly. In my opinion, the simplest way to run these numbers is to first assume you are borrowing the full amount, including the points, if any.  They run a spreadsheet, and while using the new rate, apply your full current payment each month.  Then compare balances at month 48. You'll find it easy to calculate the breakeven. In the case of the negative points, it's immediate. For higher points, the B/E is later but then you are further ahead each month. When paying off multiple debts there is a protocol that many support. Payoff your debts according to the snowball method. The snowball method proposes that you make minimum payments on all debts except the smallest one. Payoff the smallest debt as quickly as possible. As smaller debts are paid off, that makes one less minimum payment you need to make, leaving you with more money to put against the next smallest debt. So in your case, pay off the smaller debt completely, then follow up on the larger one by making regular payments at least equal to the sum of your two current minimum payments. You'll see immediate progress in tackling your debt and have one less minimum to worry about, which can serve as a little safety of it's own if you have a bad month. As to saving the thousand dollars, that is pragmatic and prudent. It's not financially useful (you won't make any money in a savings account), but having cash on hand for emergencies and various other reasons is an important security for modern living.  As suggested in another answer, you can forgo saving this thousand and put it against debt now, because you will have a freed up credit card. Credit can certainly give you that same security. This is an alternative option, but not all emergencies will take a credit card. You typically can't make rent with your credit card, for example. Good luck paying your debts and I hope you can soon enjoy the freedom of a debt free life. Also, unless I missed it and someone already mentioned it, do keep in mind the impact of these credit cards balances on your credit score. Over roughly 75% usage on a given credit account reflects badly on your score and has a pretty large impact on how your worthiness is calculated. It gives the impression that you are a person that lives month to month on cards, etc. If you could get both cards down to reasonable balances to where you could begin paying on them regularly and work them down over time, that will not only look incredible for your credit report but also immediately begin making your credit worthiness begin to raise due to the fact that you will not have accounts that (I'm assuming here) are at very high usage (over 75% of your total limit.) If you have to get one card knocked out just to get breathing room, and you're boxed in here -- or honestly even if the mental stress is causing you incredible hardship day to day, then I suppose blow one card out of the water, reassess and start getting to work on that second card. I hope this helped, I'm no expert, but I have had every kind of luck with credit cards and accounts you could think of, so I can only give my experience from the rubber-meets-the-road perspective. Good luck! To confirm: you say you have credit card debt of $18,000 with min. repayment of $466.06, plus on top of this you are also paying off a car loan and another personal loan. From my calculations if your monthly interest on your credit card is $237, the interest on your credit card should be about 15.8% p.a. Is this correct? Balance Transfer If you did a balance transfer of your $18,000 to a new credit card with 0% for 14 months and keep your repayments the same ($466) you would have saved yourself a bit over $3020 in interest over those 14 months. Your credit card balance after 14 months would be about $11,471 (instead of $14,476 with your current situation). If your interest after the 14 months went back to 15.8%  you would be able to pay the remaining $11,471 in 2.5 more years (keeping repayments at $466), saving 10 months off your repayments and a total of $4,781 in interest over 3 years and 8 months. The main emphasis here is that you are able to keep your repayments at least the same so you are able to pay off the debt quicker, and that your interest rate on the new credit card after the 14 months interest free is not more than your current interest rate of 15.8%. Things you should be careful about if you take this path: Debt Consolidation In regards to a Debt Consolidation for your personal loan and credit card (and possibly your car loan) into a single lower interest rate loan can be a good idea, but there are some pitfalls you should consider. Manly, if you are taking out a loan with a lower interest rate but a longer term to pay it off, you may end up paying less in monthly repayments but will end up paying more interest in the long run. If you do take this course of action try to keep your term to no longer than your current debt's terms, and try to keep your repayments as high as possible to pay the debt off as soon as possible and reduce any interest you have to pay. As you already have you credit card and personal loan with CBA talk to them to see what kind of deal they can give you. Again be wary of the fine print and read the PDS of any products you are thinking of getting. Refer to ASIC - Money Smart website for more valuable information you should consider before taking out any debt consolidation. Other Action You Can Take If you are finding that the repayments are really getting out of hand and no one will help you with any debt consolidation or reducing your interest rates on your debts, as a last resort you can apply for a Part 9 debt agreement. But be very careful as this is an alternative to bankruptcy, and like bankruptcy a debt agreement will appear on your credit file for seven years and your name will be listed on the National Personal Insolvency Index forever. Further Assistance and Help If you have trouble reading any PDS, or want further information or help regarding any issues I have raised or any other part of your financial situation you can contact Centrelink's Financial Information Service. They provide a free and confidential service that provides education and information on financial and lifestyle issues to all Australians.