Business Finance Basics for Entrepreneurs: Pricing, Margins, and How Not to Lose Money on Discounts
· Jhon jairo Gomez Quintero
Many entrepreneurs get excited when sales start coming in, only to find at the end of the month that there's almost no profit left. The reason is almost always the same: not knowing their numbers. You don't need to be an accountant to manage your business finances well. A few basic concepts will help you make better decisions.
1. Know your real cost per product
The cost of a product isn't just what you pay the supplier. Add up everything it takes to get it to your customer:
- Product price
- Shipping cost
- Payment processing fees
- Advertising per sale (your ad spend divided by the sales it generates)
- Packaging, apps, and other small expenses
2. Understand your profit margin
Your margin is what's left after covering all your costs. A simple example:
- Product: $10
- Shipping: $5
- Payment fees: $1
- Advertising per sale: $6
- Total cost: $22
If you sell that product for $35, your profit is $13, about 37% of the price. That's your margin.
3. Set prices with room to grow
A common mistake is setting the lowest price to compete. If your margin is too small, any surprise, like a refund or an ad that didn't work, leaves you losing money. Look for a price that covers your costs, leaves you a profit, and lets you run promotions from time to time.
4. Be careful with discounts
Back to our example: if you apply a 20% discount to the $35 product, the price drops to $28. Your costs are still $22, so your profit falls from $13 to just $6. More than half of your profit is gone!
Smarter discounts:
- Minimum purchase: the discount only applies when the customer spends a certain amount, so they buy more.
- Bundles: sell two or three products together with a small discount.
- Free shipping over a set amount: encourages customers to fill their cart.
- Gift with purchase: a low-cost product can feel very valuable to the customer.
- Limited time: give every discount an end date.
5. Separate your personal and business money
Open an account just for your business. That way you know exactly how much comes in, how much goes out, and how much you really earn. Mixing accounts is one of the fastest ways to lose control.
6. Keep an emergency fund
Refunds, supplier price changes, or slow months: there are always surprises. Set aside part of every sale to cover these moments without putting your business at risk.
7. Review your numbers every week
Take a few minutes to review sales, ad spend, and profit. Ask yourself which products make the most money and which ones just create work. Sometimes selling fewer, more profitable products is the best decision.
8. Reinvest strategically
Once you start making a profit, reinvest part of it in what works: your best-selling product, your best-converting ad, or better photos. Growing with discipline is growing to last.
In summary
- Calculate your real cost, not just the supplier's price.
- Know your margin before offering any discount.
- Use promotions that increase order value.
- Separate your accounts and review your numbers often.
Clear numbers give you peace of mind and help you grow. At JJTRADERNY, we want your business not just to sell, but to be profitable. Follow our blog for more practical guides.






