1. Commodity profit. You said that diamonds are marked with a price, so you must know the cost when you purchase them. If there is a system, you can directly enter the cost, so that every time you sell a product, you can calculate the profit by knowing the cost. However, if you don't have a system, you can calculate it in proportion. Generally speaking, the mantissa of the bid price is changed to Geely number, so you can also calculate the profit of the goods by proportion (only the profit is biased, but the deviation is not big). For example, a commodity with a cost of 1000 is magnified five times and the price is 5000. If the mantissa needs to be changed, the price is 5 188, and 20% off sales is 4 150. When calculating the profit of goods at the end of the month, the cost can be calculated as 5 188/5= 1038. Gross profit of goods = (4150-1038)/5188 = 60%, so that by the end of the month, you will know exactly how much gross profit the store sells in that month, and you can basically get the monthly sales of the store by subtracting the store expenses, staff salaries, decoration depreciation, high depreciation of fixed assets, rent and monthly fees of water and electricity.
2. The expense account in the store must be clear. It's best for customers to fill in the reimbursement form for each in-store expense and settle it once a month, so that you can clearly know what the monthly expense is and what it is used for. I believe you should all do this. I think the biggest headache for jewelry stores is consumables, such as jewelry boxes and bags, which are bought more and consumed less. In this case, it is best to register the quantity of spare parts, count the quantity once a month, and calculate the profit and loss statement every month, which shows whether there is waste in the store. In fact, sometimes this kind of low-value consumables in the store is really a big expense.
3. The first two points are about profits, and a working capital account should be set up every month. This statement can be simpler. For the sales, actual expenditure, personnel expenditure, purchase payment, etc. of the current month. It's all been detained. The deduction here is the actual expenses, which is different from the income statement, such as rent, which may be paid once a year. If it is in the income statement, it will be deducted every month. If it is a current account, which month is it? Decoration, props, decoration depreciation is generally three years, props depreciation is calculated by one or two years, generally one year will be changed; This working capital account is to let you know clearly how much working capital you have left each month and the projects that you can start next month, such as investing in new stores, such as increasing the inventory of fixed goods, such as the expansion of stores and so on. You can do it for more than a year. Generally, this month, you can know what expenses will be spent next month, how much liquidity you need to keep and how much you can use this month.
Most jewelry stores are individuals, and the tax is simple and uncomplicated, with a fixed tax or a small tax. You don't need to declare your account. All you want is to master your own capital movements and commodity profits, and it is best to simplify them. When you reach the scale of the company, most companies don't have big accounts, and they basically do tax avoidance financial outsourcing. If the corporate accounts of ordinary taxpayers are complicated and need professional financial personnel, you need a sound financial system.
You spend so much money, I don't know if it will be of any use to you. It's all personal experience.