The first thing to get right is separating retail products from service supplies in your books. Polish, creams, and haircare products you sell to customers are inventory that generates revenue. The acetone, cotton pads, and disposable files your techs use during services are operating expenses. Mixing them together in one “supplies” category means you can’t see how much money your retail line is actually making.

In QuickBooks Online, you can set up inventory items for each product or product category you sell. For most nail salons, tracking by category rather than individual SKU is more practical. You probably don’t need a separate line for every shade of OPI polish. But you do want to know how much you spent on polish inventory versus how much you sold, and the same for lotions, creams, and haircare products. When you receive a shipment, record it as inventory. When you sell a product, record the sale. QBO tracks quantity on hand and calculates your cost of goods sold automatically. That gives you a real gross margin number for retail, which for most salons runs significantly higher than service margins once you factor in labor costs.

Do a physical count every month. Pick a slow day, count what’s actually on the shelves and in the back room, and compare it to what QBO says you should have on hand. The difference is shrinkage. That could be theft, products that techs used during services but never recorded, or receiving errors from your supplier. In a busy salon with multiple techs and walk-in traffic, shrinkage adds up faster than most owners expect. Monthly cycle counts catch problems early instead of letting them quietly eat into your profits for months.

Keep your retail purchases on a separate category from your service supply purchases in your accounting. When your books are reconciled each month, you should be able to see exactly what you spent on retail inventory, what you sold, and what your margin was. That visibility helps you make smarter purchasing decisions. If a product line isn’t moving, the numbers will tell you before you notice bottles collecting dust. If something is selling well, you’ll know to reorder before you run out. This is the kind of detail that makes small business bookkeeping in the Bronx actually useful for running your business day to day.

For a small retail operation, QBO’s built-in inventory feature handles the job without needing a separate point-of-sale inventory system. Most nail salons across NYC are doing enough retail to justify tracking it but not so much that they need specialized inventory software on top of their accounting platform.

If your books currently lump all purchases together under one general supplies category, that’s the first thing to fix. A bookkeeper who understands salon and spa accounting can restructure your chart of accounts so retail inventory, service supplies, and cost of goods sold each have their own lines. That single change transforms your financial statements from a vague summary into something that shows which parts of your business are actually making money and which ones need attention.