Running a Shopify store is exciting. You’re building a brand, selling products, and connecting with customers. But behind every successful store is something less glamorous — understanding the numbers.
The good news is you don’t need to be an accountant to manage your finances well. Knowing a few key financial terms can help you make better decisions, price your products properly and keep your business healthy.
This guide explains the most important financial numbers every UK Shopify business owner should understand, in plain English.
Why Your Numbers Matter
Many small ecommerce businesses focus mainly on sales. Sales are important, but they only tell part of the story.
You could be:
- Selling lots of products but making very little profit
- Running out of cash, even though sales are growing
- Pricing too low and losing money on every order
Understanding your financial numbers helps you:
- Price products properly
- Control costs
- Plan for growth
- Avoid cash flow problems
- Make confident business decisions
Think of your numbers as the dashboard for your business.
1. Revenue (Your Sales)
Revenue is the total amount of money your business earns from sales before any expenses are taken off.
For a Shopify store this usually means:
- Product sales
- Shipping charges
- Gift cards or digital products
Example:
If you sell 200 products at £25 each:
Revenue = £5,000
Important: Revenue is not profit. It’s simply the money coming in before costs.
Many new businesses celebrate revenue milestones but forget to check how much they actually keep
2. Cost of Goods Sold (COGS)
Cost of Goods Sold (COGS) is the direct cost of producing or buying the products you sell.
For ecommerce businesses this can include:
- Product manufacturing or wholesale purchase price
- Packaging
- Product inserts
- Import duties
- Freight to your warehouse
Example:
You sell a product for £30
It costs £12 to buy and ship to you
Your COGS = £12
Tracking this accurately is essential for knowing your real profit.
3. Gross Profit
Gross profit shows how much money you make from selling products before business expenses.
Formula:
Revenue – Cost of Goods Sold = Gross Profit
Example:
Revenue: £5,000
COGS: £2,000
Gross Profit = £3,000
This is the money available to pay for things like marketing, apps, software, and salaries.
4. Gross Profit Margin
Your gross profit margin shows the percentage of revenue you keep after product costs.
Formula:
Gross Profit ÷ Revenue × 100
Example:
£3,000 ÷ £5,000 = 60% gross margin
For many Shopify stores, healthy gross margins are typically 50–70%, though this varies by product category. If your margin is too low, it becomes difficult to cover marketing costs and still make a profit.
5. Operating Expenses
These are the costs of running your business day to day.
Common Shopify operating expenses include:
- Shopify subscription
- Shopify apps
- Website hosting or themes
- Marketing and ads
- Email marketing tools
- Accounting software
- Professional services
- Office or warehouse costs
- Salaries or freelancers
These expenses are sometimes called overheads.
6. Net Profit (The Number That Really Matters)
Net profit is what’s left after all expenses are deducted.
Formula:
Revenue
– Cost of Goods Sold
– Operating Expenses
= Net Profit
Example:
Revenue: £5,000
COGS: £2,000
Expenses: £2,200
Net Profit = £800
This is the actual money your business earns.
7. Cash Flow
Profit and cash are not the same thing. Cash flow refers to the money moving in and out of your bank account. A business can be profitable but still run into trouble if cash is tied up in:
- Inventory
- Large ad spend
- Slow supplier payments
- VAT bills
For ecommerce businesses, cash flow is often affected by:
- Buying stock in advance
- Paying for marketing before sales happen
- VAT payments to HMRC
Keeping an eye on cash flow helps ensure you always have enough money to operate.
8. Break-Even Point
Your break-even point is when your business covers all costs but makes no profit.
This tells you the minimum sales you need each month.
Example:
Monthly expenses = £4,000
Average product profit = £10
Break-even sales = 400 products
Once you sell more than this, your business begins generating profit.
9. VAT (For UK Businesses)
If your taxable turnover exceeds the UK VAT threshold (currently £90,000), you must register for VAT. For ecommerce businesses this means:
- Charging VAT on eligible sales
- Submitting VAT returns to HMRC
- Paying collected VAT minus reclaimable VAT
Many Shopify store owners set aside VAT as they collect it so it’s not accidentally spent.
10. Customer Acquisition Cost (CAC)
For ecommerce stores, marketing costs are a major driver of profitability.
Customer Acquisition Cost (CAC) measures how much it costs to gain a new customer.
Formula:
Total marketing spend ÷ New customers acquired
Example:
£1,000 ad spend
100 new customers
CAC = £10 per customer
If your average profit per order is £8, spending £10 to acquire a customer would not be sustainable unless customers buy again later.
A Simple Financial Habit for Shopify Owners
You don’t need complicated reports to stay on top of your finances. A simple monthly check-in can include:
- Total revenue
- Cost of goods sold
- Gross profit margin
- Operating expenses
- Net profit
- Cash balance
Spending 30 minutes each month reviewing these numbers can dramatically improve decision making.
Final Thoughts
Understanding your numbers isn’t about becoming a finance expert — it’s about running a healthier business. For Shopify store owners, the most important things to remember are:
- Revenue doesn’t equal profit
- Margins matter more than sales volume
- Cash flow keeps your business alive
- Tracking a few key metrics regularly makes a huge difference
When you know your numbers, you’re no longer guessing — you’re making informed decisions that support sustainable growth.
