declaring payments to a credit card for a shared expense
If this is a business expense - then this is what is called reimbursement. Reimbursement is usually not considered as income since it is money paid back to you for an expense you covered for your employer with your after-tax money. However, for reimbursement to be considered properly executed, from income tax stand point, there are some requirements. I'm not familiar with the UK income tax law specifics, but I reason the requirements would not differ much from places I'm familiar with: before an expense is reimbursed to you, you should usually do this:  Show that the expense is a valid business expense for the employer benefit and by the employer's request. Submit the receipt for reimbursement and follow the employer's procedure on its approval. When income tax agent looks at your data, he actually will ask about the £1500 tab. You and you'll employer will have to do some explaining about the business activity that caused it. If the revenue agent is not satisfied, the £750 that is paid to you will be declared as your income. If the required procedures for proper reimbursement were not followed - the £750 may be declared as your income regardless of the business need. Have your employer verify it with his tax accountant.
"You want to know if you should pay cash or use a credit card like cash? There are so many benefits to the card, like purchase protection, cash back, and postponed payments, that there needs to be a really good reason to pay cash.  If you are concerned about the 10% threshold, ask your credit card company to raise your limit.  If you are indifferent, let the merchant decide for you by asking for a discount if you pay cash.  The biggest reason is that credit cards, when handled shrewdly, make your money work for you by keeping it in less liquid / higher interest investments like inflation-adjusted T-bills. You will still be able to access it by using the credit card to float large expenses without liquidating at a loss. Investment Accounts like Schwab One are great for this since you can ""borrow"" cash at a low interest rate against your securities, until your security sale clears." "It makes no sense to spend money unnecessarily, just for the purpose of improving your credit score.  You have to stop and ask yourself the question ""Why do I need a good credit score?""  Most of the time, the answer will be ""so I can get a lower interest rate on (ABC loan) in the future.""  However, if you spend hundreds or even thousands of dollars in the present, just so that you can save a few points on a loan, you're not going to come out ahead. The car question should be considered strictly in the context of transportation expenses:  ""It cost me $X to get around last year using Lyft. If instead I owned a car, it would have cost me $Y for gas, insurance, depreciation, parking, etc.""  If you come out ahead and Y < X, then buy the car.  Don't jump into an expensive vehicle (which is never a good investment) or get trapped into an expensive lease which will costs you many times more than the depreciation value of a decent used car, just so that you can save a few points on a mortgage. Your best option moving forward would be to pay off your student loans first, getting rid of that interest expense.  Place the remainder in savings, then start to look at a budget.  Setting aside a 20% down payment on a home is considered the minimum to many people, and if that is out of reach you might need to consider other neighborhoods (less than 400K!).  If you're still concerned about your credit score, a good way to build that up (once you have a budget and spending under control) is to get a credit card with no annual fees.  Start putting all of your expenses on the credit card (groceries, etc), and paying off the balance IN FULL every month.  By spending only what you need to within a reasonable budget, and making payments on time and in full, your credit rating will begin to gradually improve.  If you have a difficult time tracking your expenses or sticking to a budget, then there is potential for danger here, as credit cards are notorious for high interest and penalties.  But by keeping it under control and putting the rest toward savings, you can begin to build wealth and put yourself in a much better financial position moving into the future." A lender will look at three things when giving a loan: Income. Do you make enough money each month to afford the payments. They will subtract from your income any other loans, credit card debt, student loan debt, mortgage. They will also figure in your housing costs. Your Collateral. For a mortgage the collateral is the house, for a car loan it is the car. They will only give you a loan to a specific percentage of the value of the collateral. Your money in the bank isn't collateral, but it can serve as a down payment on the loan.  Your Credit score. This is a measure of how well you handle credit. The longer the history the better. Using credit wisely is better than not using the credit you have.  If you don't have a credit card, get one. Start with your current bank. You have a history with them. If they won't help you join a credit union. Another source of car loans is the auto dealer. Though their rates can be high. Make sure that the purchase price doesn't require a monthly payment too high for your income. Good rules of thumb for monthly payments are 25% for housing and 10% for all other loans combined. Even a person with perfect credit can't get a loan for more than the bank thinks they can afford. Note: Don't drain all your savings, you will need it to pay for the unexpected expenses in life. You might think you have enough cash to pay off the student loan or to make a big down payment, but you don't want to stretch yourself too thin. "In this answer, I won't elaborate on the possibilities of fraud (or pure human error), because something can always go wrong. I will, however, explain why I think you should always keep receipts. When the (monthly or so) time comes to pay your credit card bill, your credit card company sends you a list of transactions. That list has two primary purposes, both of which I would consider equally important: While for the former item, a receipt is not necessary (though it certainly does not hurt showing the receipt along with the bill to provide further proof that the payment was indeed connected to that bill), the latter point does require you to store the receipts so you can check, item-by-item, whether each of the sums is correct (and matched with a receipt at all). So, unless you can actually memorize all the credit card transactions you did throughout the past one or two months, the receipts are the most convenient way of keeping that information until the bill arrives. Yes, your credit card company probably has some safeguards in place to reveal fraud, which might kick in in time (the criteria are mostly heuristical, it seems, with credit cards or legitimate transactions here getting blocked every now and then simply because some travelling of the actual owner was misinterpreted as theft). However, it is your money, it is your responsibility to discover any issues with the bill, just as you would check the monthly transaction list from your bank account line by line. Ultimately, that is why you sign the vendor copy of the receipt when buying something offline; if you discover an issue in your list of transactions, you have to notify your credit card company that you dispute one of the charges, and then the charging vendor has to show that they have your signature for the respective transaction. So, to summarize: Do keep your receipts, use them to check the list of transactions before paying your credit card bill. EDIT: The receipt often cannot be replaced with the bill from the vendor. The bill is useful for seeing how the sum charged by the respective vendor was created, but in turn, such bills often do not contain any payment information, or (when payment was concluded before the bill was printed, as sometimes happens in pre-paid scenarios such as hotel booking) nondescript remarks such as ""- PAYMENT RECEIVED -"", without any further indication of which one of your credit cards, debit cards, bank accounts, stored value cards, or cash was used." Paying up in full before the statement is posted does not seem a good idea. I feel you should keep some small amount to be posted as a statement balance and pay that in full each month. If you keep your statements as always 0 will give creditors an impression that you have cards and you don't utilize them, so they cant really gauge how you preform being debt, whether you are able to manage your debt well etc. I always keep <100 dollar in every credit card I have to be posted a statement balance. I have >100k credit line over 3 cards. So if I take air ticket to SE Asia runs into 3000$ for my family, I pay 2900.00 a day before statement generates and keep 100 for statement to be posted. pay 100 the next day or as auto debit. This way you have some utilization + lower credit card outstanding at any point make your utilization right in single digits. "I've been in a very similar situation to yours in the past.  Since the company is reimbursing you at a flat rate (I assume you don't need to provide documentation/receipts in order to be paid the per diem), it's not directly connected to the $90 in expenses that you mention.  Unless they were taking taxes out that would need to be reimbursed, the separate category for Assets:Reimbursable:Gotham City serves no real purpose, other than to categorize the expenses. Since there is no direct relationship between your expenses and the reimbursement, I would list them as completely separate transactions: Later, if you needed to locate all of the associated expenses with the Gotham trip, gnucash lets you search on memo text for ""Gotham"" and will display all of the related transactions.  This is a lot cleaner than having to determine what piece of the per diem goes to which expenses, or having to create a new Asset account every time you go on a trip." "Credit reports have line items that, if all is well, say ""paid as agreed."" A car loan almost certainly gets reported. In your case it probably says the happy ""paid as agreed.""  It will continue to say that if you pay it off in full. You can get the happy ""paid as agreed"" from a credit card too.  You can get it by paying the balance by the due date every month, or paying the mininum, or anything in between, on time. But you'll blow less money in interest if you pay each bill in full each month. You don't have to carry a balance. In the US you can get a free credit report once a year from each of the three credit bureaus. Here's the way to do that with minimal upsell/cross-sell hassles. https://www.annualcreditreport.com/  In your situation you'd probably be smart to ask for a credit report every four months (from each bureau in turn) so you can see how things are going.  They don't give you your FICO score for free, but you don't really care about that until you're going for a big loan, like for a condo. It might be good to take a look at one of those free credit reports real soon, as you prepare to close out your car loan. If you need other loans, consider working with a credit union. They sometimes offer better interest rates, and they often are diligent about making credit bureau reports for their good customers; they help you build credit. You mentioned wanting to cut back on insurance coverage. It's a worthy goal, but it's generally called ""self-insuring"" in the business.  If you cancel your collision coverage and then wreck your car, you absorb the cost of replacing it. So think about your personal ability to handle that kind of risk." This will not result in any finance charges: I wouldn't recommend cutting it quite so close, but as long as you pay the full balance as shown on each statement by the due date shown on that same statement, you won't incur a finance charge. Of course this only applies in the case of ordinary purchases that have a grace period.