Can a credit card company raise my rates for making a large payment?
"No. That's pretty unlikely. Card issuers typically base your rate on your credit score. Paying down debt reduces your percent of available credit used, and improves your score until you are in the 1-20% range. That's optimum. To this issuer, you are one of a million customers, there's no emotion in this, just numbers to them. For what it's worth, if a card issuer raises your rate, you are permitted to ""not accept"" the rate, stop using the card for new charges, and pay at the current rate. Of course this doesn't apply to zero interest deals, only to increases to your regular rate." "Short answer: No, not normally. Long Answer:  It depends on the contract.  If the 14% is some sort of special offer, with conditions, then if you violate those conditions, they can jack you up to whatever the 'normal' rate is.  But outside of that condition, I can't see any reason why they would wish to penalize you for making a payment.  You will note that there is no ""maximum"" payment on the bill. Secondly, even if they do jack up the rate to 28%, you're still better off paying $70 on 3000, than you are paying ~120 on 10k.  Then tell them where to stick their card and get a new one." "No. Credit card companies will typically not care about your individual credit card account. Instead they look either at a ""package"" of card accounts opened at roughly the same time, or of ""slices"" of cardholder accounts by credit rating. If an entire package's or slice's balance drops significantly, they'll take a look, and will adjust rates accordingly (often they may actually decrease rates as an incentive to increase you use of the card). Because credit card debt is unstructured debt, the bank cannot impose an ""early payment penalty"" of any kind (there's no schedule for paying it off, so there's no way to prove that they're missing out on $X in interest because you paid early). Generally, banks don't like CC debt anyway; it's very risky debt, and they often end up writing large balances off for pennies on the dollar. So, when you pay down your balance by a significant amount, the banks breathe a sigh of relief. The real money, the stable money, is in the usage fees; every time you swipe your card, the business who accepted it owes the credit card company 3% of your purchase, and sometimes more."
A) The Credit Rating Agencies only look at the month-end totals that are on your credit card, as this is all they ever get from the issuing bank. So a higher usage frequency as described would not make any direct difference to your credit rating. B) The issuing bank will know if you use the credit with the higher frequency, but it probably has little effect on your limit. Typically, after two to three month, they reevaluate your credit limit, and it could go up considerably if you never overdrew (and at this time, it could indirectly positively affect your credit rating). You could consider calling the issuing bank after two month and try to explain the history a bit and get them to increase the limit, but that only makes sense if your credit score has recovered. Your business paperwork could go a long way to convince someone, if you do so well now. C) If your credit rating is still bad, you need to find out why. It should have normalized to a medium range with the bad historic issues dropped. Probably not. I say probably because your credit card's terms of service may treat certain purchases (I'm thinking buying traveler's checks off-hand) as cash advances. See also this question. "Without knowing what the balances are, I associate ""uncomfortable"" with high, as in tens of thousands.   What I would do: is 1) cut up the cards and stop using them, and 2) have some balance transfer offers in hand the next time you call to negotiate with the companies.  Essentially, you will have to convince them that they will have to explain one of two things to their boss: why they lowered your rate or why you left. They can collect less interest from you or no interest from you.  It's up to them.  If they don't offer you something that's in the ballpark of your balance transfer offer, then bid them goodbye and complete the balance transfer. As far as paying them off, the top two modes of repayment are lowest balance first (aka snowball) or high interest rate first.  Both methods are similar in that you pay minimums on all but the method's focus point.  Whether it is lowest balance or highest interest rate, you pay ALL of your extra money on the lowest balance or the highest interest debt until it is gone and then you move onto the next one in the list. For what it's worth, I prefer the lowest balance method, you see progress faster." It's very simple: The whole purpose of a credit card for the credit card company is that you borrow money and then pay them extortionate interest for the rest of your life. The way you describe yourself, you are the perfect victim. So the obvious thing for you to do is to not touch credit cards with a barge pole.  IF you decide to use a credit card, then what you should really, really do is to pay back the maximum amount possible all the time. Best is to pay off the credit card in full if at all possible.  Consider this: If you owe them money, the interest rate is so high that with the minimum payment, your debt will be growing all the time. Spend $1,000, pay $10 a month, and next year you owe $1,100 without having used the credit card at all. If you pay $32 a month as you mentioned, your $1,000 purchase is actually a multi-year loan. If you need a multi-year loan for a $1,000 purchase, an ordinary loan from your bank will be much, much cheaper. There is no catch. You've been a good customer and your bank wants to reward you for it. One of the ways you build credit is by having more credit available. So by increasing your credit limit, its lowering your credit utilization rate (one of the factors that go into your credit score) - which is a good thing. So your bank trusts you with more credit, which again is a good thing. You can also request a line of credit increase yourself without waiting for the bank to do so - but there's a 6 month wait between each increase, assuming you get one. I always ask every 6 months and have gotten approved each time, and it's helped my credit score tremendously. Is my understanding okay ? If so, it seems to me that this system is   rather error prone. By that I mean I could easily forget to make a   wire some day and be charged interests while I actually have more than   enough money on the check account to pay the debt. Which is where the credit card company can add fees so you pay more and they make more money. Don't forget that in the credit case, you are borrowing money rather than using your own. Another thing that bothers me is that the credit card apparently has a   rather low credit limit. If I wanted to buy something that costs $2500   but only have a credit limit of $1500, can I make a preemptive wire   from my check account to the VISA account to avoid facing the limit ?   If so, what is the point for the customer of having two accounts (and   two cards for that matter...) ? If you were the credit card company, do you believe people should be given large limits first? There are prepaid credit cards where you could put a dollar amount on and it would reject if the balance gets low enough. Iridium Prepaid MasterCard would be an example here that I received one last year as I was involved in the floods in my area and needed access to government assistance which was given this way. Part of the point of building up a credit history is that this is part of how one can get the credit limits increased on cards so that one can have a higher limit after demonstrating that they will pay it back and otherwise the system could be abused. There may be a risk that if you prepay onto a credit card and then want to take back the money that there may be fees involved in the transaction. Generally, with credit cards the company makes money on the fees involved for transactions which may come from merchants or yourself as a cash advance on a credit card will be charged interest right away while if you buy merchandise in a store there may not be the interest charged right away. "I can't speak for every credit card, but I know two of mine don't have overage fees. The transaction either goes through, or gets denied. Check your card agreement and look for the fee section. One other thing to consider, sometimes when you make an online payment to a credit card, you will notice that the ""Available Balance"" number on the account will increase right away even if the payment is not reflected on your ""Current Balance"". If this is the case, and you are positive that your payment will be successfully posted to the account, I say go for it." Paying weekly to be able to have maneuver room under your credit limit is a way to handle low credit limits. Doing it to boost your credit score when you have no immediate need for a loan is wasting energy.  A few months in advance of buying a car or house, you can start to worry about your utilization rate. When you apply for the loan they will pull your credit file, and that will lock in your utilization rates. Then make sure that you pay the balance quickly, and if you need to make a big purchase pay the bill before the account closes for the month. Keep in mind that if you pay the balance every month the highest utilization rate will occur the day the payment is due. This is because it not only has all the purchases from the previous bill, but all the purchases you have made since that bill closed. For example if you have a credit limit of 10K and you spend 2K a month on the credit card, on the day the payment is due it is not unusual to see the total owed to be above 3K. If they pulled your file on that day, your utilization rate would appear to be above 30%. "This is most likely protecting Square's relationship with Visa/Mastercard/AMEX/etc. Credit card companies typically charge their customers a much higher interest rate with no grace period on cash advances (withdrawals made from an ATM using a credit card). If you use Square to generate something that looks like a ""merchandise transaction"" but instead just hand over a wad of banknotes, you're forcing the credit card company to apply their cheaper ""purchases"" interest rate on the transaction, plus award any applicable cashback offers†, etc. Square would absolutely profit off of this, but since it would result in less revenue for the partner credit card companies, that would quickly sour the relationship and could even result in them terminating their agreements with Square altogether. † This is the kind of activity they are trying to prevent:  1. Bill yourself $5,000 for ""merchandise"", but instead give yourself cash.  2. Earn 1.5% cashback ($75).  3. Use $4,925 of the cash and a $75 statement credit to pay your credit card statement.  4. Pocket the difference.  5. Repeat. Note, the fees involved probably negate any potential gain shown in this example, but I'm sure with enough creative thinking someone would figure out a way to game the system if it wasn't expressly forbidden in the terms of service" Yes, it is possible, and many companies do it for legitimate reasons.  For example renewing subscriptions or one-click ordering. The only way to completely stop it would be to cancel the card.  More realistically, check your bill whenever it arrives, and report any unauthorized transactions to the card issuer. I had a macys card which only had $75.00 credit limit... I accidently paid over the limit so the card had $100.00 in it. I left it that way for a month.. My credit limit turned into 100.. So I do think its possible to increase your credit limit that way.. I've tried many times requesting for a credit limit increase.. I was denied many times.. The only thing I have is to add money but the tricky thing is that you'll have to add money and spend the whole amount and then pay it off at once for the credit limit to stick. But since you have great credit assuming because your limit is 1000, you should request for an increase of your credit limit. I've read multiple times that the way to rebuild the credit score is to get a credit card and then have some minor charges on it every month and have them paid in full every month. Old negative events age and this disciplined activity rebuild the score to some not to horrible levels. Now it's true that it's hard to get reasonably good credit cards when your credit score is poor. Yet it's not necessary to have a good credit card for this case - such things as large credit limit are not needed. All that's needed is a long grace period so that there's no interest between the moment a charge is done and a moment the bill is paid in full at the end of the month. Yes, the card may have rather high interest and rather low credit limit, but it doesn't really matter. I've read once on MSN Money that people are offered credit even while they're in the middle of bankruptcy, so it's not impossible to get a credit card in the described situation. Goes without saying that a lot of discipline will be needed to have all this implemented. Is it possible to pay off my balance more than once in a payment period in order to increase the amount I can spend in a payment period? Yes, but you should only do that if you expect an expense that is larger than your limit allows. Then, provide an extra payment before your expense occurs since it will take longer for the issuer to apply it to the outstanding balance. For instance, when going on holiday you could deposit additional money to increase your balance temporarily. That said if your goal is to improve your credit score I would recommend using the card, staying within your limit and pay it off every month. The 2 largest factors going into calculating your credit score are: By paying off the balance each month you  After 6-9 months you can probably get a bigger limit, to improve your score. I wouldn't change to a different card or get a second one, as some issuers will run a check on your creditscore that lowers it temporarily. Also: you're entitled to a free credit report each year. I'd recommend asking for one every year so you can keep track on how your credit score improves. It also gives you the opportunity to check for mistakes on your report. Check here for more information: http://www.myfico.com/crediteducation/whatsinyourscore.aspx You also might want to see what sort of documentation the credit card company has. Companies can get pretty lazy sometimes about recordkeeping; there have been cases where banks tried to foreclose on a property but weren't able to produce documents establishing the mortgage. With your father dead, is there anything other than the credit card company's word that the debt is valid? I don't know of any that are comparable to credit cards. There's a reason for that. Debit cards, being newer, have a much lower interchange rate. Since collecting on debt is risky and less predictable, rewards / miles are paid from those interchange fees. This means with a debit card there's less money to pay you with. So what can you do? Assuming your credit isn't terrible, you can just open a credit card account and pay in full for purchases by the grace period. I don't know how all cards work, but my grace period allows me to pay in full by the billing date (roughly a month from purchase) and incur no finance charges. In effect, I get a small 30 day loan with no interest, and a cash back incentive (I dislike miles). You're also less liable for fraud via CC than debit.