Do I even need credit cards?
Credit cards are great. You get free money for 30+ days and a bunch of additional benefits like insurance, extended warranties and reward programs. When vendors don't behave, you dispute the charge with the credit card and they deal with it on your behalf. Just get a fee-free American Express card and pay the balance off each month.  There's nothing wrong with using cash either, but I would avoid debit cards like the plague. Try to buy an airline ticket, rent a hotel room, or rent a car without a credit card. Doable? Perhaps. Easy? Nope. With a debit card, you run the risk of a hotel reserving more than your stay's cost for room service, parking, etc and potentially having a domino effect if other payments bounce.  We just spent 3 nights in NYC, room was just over $1000. Do I really want to carry that much cash? There are numerous reasons that go beyond the immediate requirement for access to credit.  Many people just plain don't like carrying cash. Before electronic debit cards became mainstream about the only way to pay for online services was with a credit card.  This has now changed just about everywhere except a large number of airlines which still only sell online tickets via a credit card payment. And then there are all those countries where governments (and some banks) have decided to charge merchants more when customers use debit cards.  If you don't like carrying cash then you may find that the only card you can use is a credit card. These concerns are gradually disappearing and at some stage someone is likely to offer a combined debit-credit card. At which point you'll probably get credit whether you like it or not. You don't need a credit card anymore than you need a TV or a car.  There might be many circumstances where a credit card is a convenience, there might be things you give up because you don't have a credit card.  There are even some upsides to a well managed card account. But no, you don't need it. People have credit cards for various reasons depending upon their personal situation and uses  You don't need to have a Credit Card if you don't have a reason to. But most people do. A credit card can be a long running line of credit that will help to boost your FICO score.  However if you have student loans, a mortgage, or car payments those will work just as well. If you ever get to the point where you don't have any recent lines of credit, this may eventually end up hurting your score, but until then you really don't need any extras. You don't need credit cards but there are few benefits, if you pay them off right away I assume you do have a debit card, since sometimes (like unattended gas stations or shopping on the web) cash is not accepted. "No you do not need a credit card.  They are convenient to have sometimes.  But you do not ""need"" one.  I know people who only have one for use when they travel for work and get reimbursed later.  But most companies have other ways to pay for your travel if you tell them you do not have a credit card." I can't answer the question if you should or shouldn't get a credit card; after all, you seem to manage fine without one (which is good). I started using credit cards when I lived in the UK as the consumer protection you get from a credit card there tends to be better than from a debit card. I'd also treat it as a debit or charge card, ie pay it off in full every month. That way, because you're not carrying a balance the high interest rate doesn't matter and you avoid the trap of digging yourself deeper into the hole each month. Cashback or other perks offered by a credit card can be worth it, but (a) make sure that they're worth more than the yearly fee and (b) that they're perks you're actually using. For that reason, cashback tends to work best. I'd get a VISA or Mastercard, they seem to be the ones that pretty much everybody accepts. Amex can have better perks but tends to be more expensive and isn't accepted everywhere, especially not outside the US. But in the end, do you really need one if you're managing fine without one? If you are in the U.S., without credit cards, you probably don't have a credit history. Without a credit history, you won't be able to get a loan/mortgage, and even if you do, you'll get it on very unfavorable terms. Depending on where you live you might even have great difficulty renting an apartment. So, the most important reason to have credit cards is to have a good credit score. People have already listed other advantages of having credit cards, but another thing that wasn't mentioned is fraud protection. Credit cards are better protected against fraud than debit cards. You probably shouldn't use debit cards online unless you must. Also, without a credit card or credit history, some simple and important liberties like renting a car while you are travelling might be denied to you. So, in conclusion, it's bizarre, but in modern America you need credit cards, and you need them bad. Eventually you are going to need some sort of real credit history.  It is possible that you will be able to evade this if you never buy a house, or if you pay cash for any house/condo/car/boat/etc that you buy.  Even employers check credit history these days.  I wouldn't be surprised if some medical professionals such as surgeons check it also.  Obviously if you have a mortgage and car loan this doesn't apply, but I'd be curious how you acquired those unless you have substantial income and/or assets. Combine this with the fact that certain things like renting a car essentially require a credit card (because they need to put a hold on more money than they are actually going to take out of your card, so they can take that money if you don't bring the car back), and I think you should have a credit card unless you and your wife are individuals with zero impulse control, which sounds highly improbable. If your concern is the financial liability of the credit line, just keep the credit line low. "Like many things, there are pros and cons to using credit cards. The other folks on here have discussed the pros and length, so I'll just quickly summarize: Convenience of not having to carry cash. Delay paying your bills for a month with no penalty. Build your credit rating for a time when you need a big loan, like buying a house or starting a business. Provide easy access to credit for emergencies or special situations. Many credit cards provide ""rewards"" of various sorts that can effectively reduce the cost of what you buy. Protection against fraud. Extended warranty, often up to one year Damage warranty, covering breakage that might be explicitly excluded from normal warranty.  But there are also disadvantages: One of the advantages of credit cards -- easy access to credit -- can also be a disadvantage. If you pay with cash, then when you run out of cash, you are forced to stop buying. But when you pay with credit, you can fall into the trap of buying things that you can't afford. You tell yourself that you'll pay for it when you get that next paycheck, but by the time the paycheck arrives, you have bought more things that you can't afford. Then you have to start paying interest on your credit card purchases, so now you have less money left over to pay off the bills. Many, many people have gotten into a death spiral where they keep piling up credit card debt until they are barely able to pay the interest every month, never mind pay off the original bill. And yes, it's easy to say, ""Credit cards are great as long as you use them responsibly."" That may well be true. But some people have great difficulty being responsible about it. If you find that having a credit card in your pocket leads you to just not worry about how much you buy or what it costs, because, hey, you'll just put it on the credit card, then you will likely end up in serious trouble. If, on the other hand, you are just as careful about what you buy whether you are paying cash or using credit, and you never put more on the credit card than you can pay off in full when the bill arrives, then you should be fine." Credits are expensive, so it's a great advantage to pay in cash. Obviously, it's even more an advantage to pay in cash for a house or a car, of course if you can afford it. But, as annoying as it could be, there are some services, where you're out of option to pay in cash, or even to pay by bank transfer. One of the most prominent examples, Google Play (OK, as I've learned, there are prepaid cards. But Groundspeak, for example, has none.). With the further expansion of Internet and E-Economy there will be more cases like that, where paying in cash is no more an option. Booking of hotels or hostels is already mentioned. There are some that provide no other booking option that giving your credit card number. However, even if the do, for example bank transfer of, say, 20% as reservation fee, please note that international money transfer can be very expensive, and credit card is usually given only for security in case you don't come, and if you do come and pay in cash, no money is taken = no expensive fee for international money transfer and/or disadvantaging currency exchange rate. "The key part of your question is the ""so far"".  So you didn't need a credit card today, or yesterday, or last month - great!  But what about tomorrow?  The time may come when you really need to spend a little more than you have, and a credit card will let you do that, at a very modest cost if you pay it off promptly (no cost, if paid within 30 days). I learned this when I was traveling and stranded due to bad weather.  I had almost nothing in my bank account at the time, and while I actually did have a small student-type credit card, I came really close to having to sleep at the train station when I didn't have enough for another night in a hotel. As an example, if you have close friends or family living across the country, and something tragic were to happen, would you be able to pay for a flight to attend the funeral?  What if you'd recently had an accident and a big medical bill (it doesn't take much, a broken arm can cost $10,000)?  Perhaps you have a solid nest egg, but breaking a CD ahead of schedule or taking short-term capital gains on a mutual fund will usually cost more than one or two months of interest payments."
I just want to stress one point, which has been mentioned, but only in passing. The disadvantage of a credit card is that it makes it very easy to take on a credit. paying it off over time, which I know is the point of the card. Then you fell into the trap of the issuer of the card. They benefit if you pay off stuff over time; that's why taking up a credit seems to be so easy with a credit (sic) card. All the technical aspects aside, you are still in debt, and you never ever want to be so if you can avoid it. And, for any voluntary, non-essential, payment, you can avoid it. Buy furniture that you can pay off in full right now. If that means only buying a few pieces or used/junk stuff, then so be it. Save up money until you can buy more/better pieces. Credit cards are a basic building block of a stable financial plan.  By using a credit card for every purchase above, say, the price of a coffee you gain a number of material benefits.  You get the free use of the bank's money for about a month.  You reduce the amount of cash you require to almost nothing.  You get a handy budget tracking tool as many credit cards help you assign categories to expenses.  You can typically download your transactions and import them into a budget app for handy record keeping.  Many cards offer benefits such as extended warranties on items purchased, travel insurance, reward points and other benefits. There is only one caveat: Pay the entire balance, in full, every month, on or before the due date.  Don't even THINK about paying anything less and don't EVER be late. In Canada, there are many stores that take debit (Interac) but don't take Visa or MasterCard. For example, a corner store. In the US the reverse is often true: every tiny place seems to take Visa or MasterCard, but not debit. A Visa debit card looks like a Visa card to the merchant. It therefore has the benefit of being usable at places that only take Visa. (Substitute MasterCard as necessary.) This benefit is very small in Canada, less so elsewhere. Meanwhile the money is actually coming out of your bank account just like a debit card, which therefore has the benefit that you're not borrowing money, can't accidentally overspend, and run no risk of incurring interest charges. It is also a way to get what appears to be a credit card when you can't qualify for credit. If you do the majority of your spending in Canada, you don't need a Visa or MasterCard debit card. Your regular debit card (Interac) will work fine for you. If you have a credit card anyway (from another bank or whatever) then again, you don't need a debit card that can pretend to be a credit card. I am like you with not acknowledging balances in my accounts, so I pay my credit card early and often.  Much more than once a month.  With my banks bill pay, I can send money to the credit card for free and at any time.   I pay it every two weeks (when I get paid), and I will put other extra payments on there if I bought a large item.  It helps me keep my balances based in reality in Quicken. For example, I saved the cash for my trip, put the trip on my credit card, then paid it all off the day after I got home.  I used the card because I didn't want to carry the cash, I wanted the rewards cash back, I wanted the automatic protection on the car rental, and I couldn't pay for a hotel with cash. There are many good reasons to use credit cards, but only if you can avoid carrying a balance. Not sure if serious or not, but i'll bite. First of all the service you are purchasing is the access to credit card, which runs on a network supplied by financial institutions. Secondly credit card is an optional fee, taxes are mandatory (unless you are a crook). "I'm the contrarian on this forum. Since you asked a ""should I ..."" question, I'm free to answer ""No, you shouldn't increase your limit. Instead, you should close it out"". A credit card is a money pump - it pumps money from your account to the bank's profit margins. When I look at my furniture and the bank's furniture, I know exactly who needs my money more (hint: it's not the bank). Credit cards change people's spending patterns. In my first day of training as a Sears salesman, the use of the card was drummed into our heads. People purchase on average 25% more when they use a card than when they pay cash. That's good if you're a retailer or the lender (at that time Sears was both), but no good if you're a consumer. Build up a $1,000 emergency fund (for emergencies only, not ""I need a quick latte because I stayed up too late last night""), then savings for 6 to 12 months living expenses. Close and cut up the credit card. Save up and pay cash for everything except possibly your house mortgage. If you have that much cash in the bank, the bankers will be as willing to talk to you as if you had an 800+ score. I have lived both with and without debt. Life without debt is well worth the short term sacrifice early on." "Pretty much every american ""borrows"". Credit cards are essential in building credit history and story. Debit cards got popular in the past few years, but most still borrow at least a little bit on credit and pay it off right away." How you can pay your rent is really up to your landlord. They are, however, unlikely to take a credit card, for at least two reasons. Firstly they are unlikely to have the means to take electronic payment Second, and more importantly, merchants get charged a percentage of the transaction.  These fees can be quite high to them for premium cards like travel and gold cards; three, four or even five percent of the value of the transaction. This is sometimes why you see cash discounted pricing. In general, minors cannot enter into legally binding contracts --   which is what credit accounts are -- so an individually held card is   probably not an option for you right now. You will not be approved for a credit card because you are minor. The only option credit card wise for you is for your parents to add you on as an authorized user onto their accounts. The upside is that you and your parents can work out a monthly payment for the amount you spend on your equipment, the downside is that if your parents don't pay their credit card bill, your credit score/report can be negatively affected. (This also depends on the bank, however, all the banks I bank with report monthly payment activities on authorized users' credit reports as well. There might be a bank that doesn't.)  In terms of credit cards, there is nothing you can do. What you could do as the comments have suggested is either save up money for the equipment you want, or buy something cheaper. Using your credit card: Applying for a store credit card: In general it is far better to not buy bigger items like a computer until you can pay cash, or pay for it on credit card (to get reward points) and then pay off the card the next month so you don't pay interest. "Credit Cards typically charge interest on money you borrow from them.  They work in one of two ways. Most cards will not charge you any interest if you pay the balance in full each month.  You typically have around 25 days (the ""grace period"") to pay that off.  If that's the case, then you will use your credit card without any cost to yourself. However, if you do not pay it in full by that point, then you will owe 19.9% interest on the balance, typically from the day you charged the payment (so, retroactively).  You'll also immediately begin owing interest on anything else you charge - typically, even if you do then pay the next month the entire balance on time.  It's typically a ""daily"" rate, which means that the annual rate (APR) is divided into its daily rate (think the APR divided by 365 - though it's a bit different than that, since it's the rate which would be 19.9% annualized when you realize interest is paid on interest).   Say in your case it's 0.05% daily - that means, each day, 0.05% is added to your balance due.  If you charged $1000 on day one and never made a payment (but never had to - ignore penalties here), you'd owe $1199 at the end of the year, paying $199 interest (19.9*1000). Note that your interest is calculated on the daily balance, not on your actual credit limit - if you only charge $100, you'd owe $19.90 interest, not $199. Also note that this simplifies what they're actually doing.  They often use things like ""average daily balance"" calculations and such to work out actual interest charged; they tend to be similar to what I'm describing, but usually favor the bank a bit (or, are simpler to calculate). Finally: some credit cards do not have a grace period.  In the US, most do, but not all; in other countries it may be less common.  Some simply charge you interest from day one. As far as ""Standard Purchases"", that means buying services or goods.  Using your credit card for cash advances (i.e., receiving cash from an ATM), using those checks they mail you, or for cash-like purchases (for example, at a casino), are often under a different scheme; they may have the same rate, or a different rate.  They likely incur interest from the moment cash is produced (no grace period), and they may involve additional fees.  Never use cash advances unless you absolutely cannot avoid it." "I gather from your mention of ""stamp duty"" that you're in Britain?  I'm only familiar with US cards, but for them I can't see that there is any reason (other than a lack of self-discipline) not to use a credit card wherever possible, especially these days. 1) There are plenty of cards with no annual fee. 2) You get anywhere from 1-5% discount/cash back on purchases. 3) Many will give you sign-up bonuses, and a year or more of zero interest.  (So you put that money in your investment account, and odds are you make a profit on it.) 4) Even after the introductory 0% interest period, you get on average about a month of 0% interest between purchase and due date, during which period the money can be earning interest for you. I've made a good many thousands of dollars over the years doing this.  Again, the only drawback I can see is that you may not have the self-discipline to pay off the accounts before they start charging interest." "I don't think it really matters, my understanding is that as a sole trader there is no distinction between your personal and business tax affairs. The distinction between your personal and business account is mainly for your own personal benefit to make it easier to differentiate between ""wages"" and retained earnings. If you want to maintain this distinction with regard to tax then you need to somehow differentiate between tax paid on your ""wage"" and tax paid on retained earnings. You could then either make two payments, or pay from either and transfer the difference from the other. Either way, it's just a matter of perspective rather than something with a physical difference." There does not appear to be a way to export the customers and invoices nor a way to import them into another data file if you could export them. However, as said in the comments to your question, your question seems predicated upon the notion that it is 'best practice' to create a new data file each year. This is not considered necessary It should be noted that GnuCash reports should be able to provide   accurate year-end data for accounting purposes without zeroing   transactions, so book-closing may not be necessary. Leaving books   unclosed does mean that account balances in the Chart of Accounts will   not show Year-To-Date amounts.   - Closing Books GnuCash Wiki The above linked wiki page has several methods to 'close the books' if that is what you want to do - but it is not necessary. There is even a description on how to create a new file for the new year which only talks about setting up the new accounts and transactions - nothing about customers, invoices etc. Note that you can 'close the books' without creating a new data file. In summary: you cannot do it; but you don't need to create a new file for the new year so you don't need to do it.