Selling Online as a Side Hustle: The Fees People Forget to Calculate
Selling online can look beautifully simple from the outside: buy or make something for ₱500, sell it for ₱800, and keep the ₱300 difference. In practice, the sale price is only the beginning of the math.
Marketplace fees, payment processing, packaging, shipping support, discounts, ads, returns, damaged items, taxes, and the hours spent answering messages can turn an apparently healthy margin into something much thinner. The useful question is not “How much did I sell?” It is “How much did I actually keep after every cost required to make that sale happen?”
01 Event
Online selling looks simple when the selling price is compared only with product cost. The real business result appears after marketplace, payment, packaging, promotion, shipping, returns, and time are included.
02 What Changed?
Modern marketplaces and payment platforms remove friction for sellers, but that convenience comes with transaction fees and other deductions that vary by platform, payment method, seller program, and promotion.
03 Why It Matters
Gross sales can rise while actual profit stays weak. A seller can celebrate ₱50,000 in orders and still have little cash left after inventory, fees, ads, discounts, packaging, and unsuccessful orders.
04 What It Means for You
Build pricing from contribution per order, not markup alone. Use the current fee schedule for the marketplace and payment methods you actually use, then add packaging, seller-paid shipping, advertising allocation, expected returns, and the time required to run the operation.
05 Numbers + Context
As a concrete payment-processing example, PayPal’s Philippine merchant-fee page lists a standard domestic commercial transaction rate of 3.40% plus a fixed fee for markets not otherwise listed, with the fixed fee for PHP transactions shown as ₱15. Actual marketplace and payment fees vary, which is exactly why sellers should use their own current fee schedule.
06 Earnyx Takeaway
A sale is not profitable because the selling price is higher than the product cost. It is profitable only when the selling price is higher than every cost required to complete and support that order.
Track what disappears between customer payment and the money you ultimately keep, then divide monthly profit by the hours you actually spend running the side hustle.
Reference: PayPal Philippines merchant fees. Fee schedules change and other platforms use different rates.
Deep Dive
Gross sales are not profit
Revenue is the total amount customers paid. Profit is what remains after the costs of producing, selling, delivering, and supporting those orders.
That distinction matters because online platforms make gross sales highly visible. A seller can celebrate ₱50,000 in monthly orders while having surprisingly little cash left after restocking inventory and paying all the costs around those orders.
A sale is not profitable because the selling price is higher than the product cost. It is profitable only when the selling price is higher than all costs attributable to getting that order completed.
The fees people usually remember
The obvious cost is the product itself. If you buy inventory from a supplier, that is your cost of goods. If you make the product yourself, include materials and any direct production cost.
Then come the platform-related charges. Depending on where and how you sell, these may include marketplace commissions, transaction fees, payment-processing charges, seller-service fees, withdrawal costs, or other platform deductions.
The exact rates change by platform, category, seller program, payment method, and promotion. Do not build your pricing around a percentage someone posted months ago. Check the current fee schedule for the marketplace you actually use.
The costs sellers frequently forget
Packaging
Boxes, pouches, bubble wrap, tape, labels, inserts, and protective material look inexpensive individually. Multiply them across hundreds of orders and they become a real line item.
If premium packaging is part of your brand, that is completely valid. Just treat it as a product cost rather than pretending it is free.
Shipping support and delivery adjustments
Even when the customer technically pays delivery, sellers may still absorb part of the cost through free-shipping programs, shipping vouchers, weight differences, packaging changes, or promotional subsidies.
The cleanest approach is to calculate the average amount you personally absorb per successful order.
Discounts and vouchers
A ₱100 discount does not simply make the customer happy. It reduces your margin by ₱100 unless somebody else is funding it.
Platform promotions can be useful because they increase visibility or conversion, but a promotion that generates more orders at an unattractive margin can create more work without creating much more profit.
Advertising and promoted listings
Ads deserve their own line in the calculation. If you spend ₱5,000 promoting products and generate 100 completed orders attributable to that campaign, the advertising burden is roughly ₱50 per order before considering anything else.
That does not mean ads are bad. It means the customer-acquisition cost belongs in the profit calculation.
Returns, refunds, cancellations, and damaged products
Not every order ends cleanly. Some are cancelled. Some arrive damaged. Some are returned. Sometimes packaging or shipping costs cannot be recovered.
Instead of pretending these events never happen, estimate an average monthly loss from unsuccessful orders and spread it across the successful ones.
Your time is a selling cost too
Online selling is often described as passive once the products are listed. For many sellers, it is anything but passive.
There are product photos, listings, customer questions, inventory checks, order preparation, printing labels, arranging pickups, responding to complaints, reconciling payments, updating prices, bookkeeping, and sourcing replacement stock.
This is similar to the issue we discussed in calculating whether a side hustle is actually worth your time: unpaid administrative hours can make the headline earnings look much better than the effective hourly return.
A simple per-order profit formula
Start with:
Selling price − product cost − platform/payment fees − packaging − seller-paid shipping − discounts − advertising allocation − expected returns/losses = contribution per order
Then, at the monthly level:
Total contribution − fixed business expenses − taxes/compliance costs = approximate operating profit
Finally, divide that profit by the total number of hours you spent running the side hustle if you want an approximate effective hourly return.
Illustrative example
The numbers below are hypothetical and are not current marketplace rates.
Imagine a seller lists a product for ₱1,000.
| Item | Illustrative amount |
|---|---|
| Selling price | ₱1,000 |
| Product cost | −₱520 |
| Platform/payment fees | −₱90 |
| Packaging | −₱35 |
| Promotion/discount allocation | −₱60 |
| Ad cost allocation | −₱45 |
| Contribution before fixed costs/tax | ₱250 |
The product appears to have a ₱480 markup over its purchase cost. After several ordinary selling expenses, the contribution in this example is only ₱250.
That does not make the product a bad business. It simply means the seller should evaluate the business using ₱250—not ₱480—as the more meaningful starting point.
What about convenience fees?
Online commerce works because platforms remove friction for both buyers and sellers. That convenience has a cost. Our separate look at how small convenience fees accumulate applies to sellers too: individually minor charges become meaningful when repeated across every order.
The goal is not to eliminate every fee. A fee can be excellent value if it brings customers, processes payments securely, reduces fraud, or handles logistics you would otherwise need to manage yourself.
The goal is to know what you are paying for.
Three numbers every online seller should know
- Contribution per order: what remains after variable order-level costs.
- Monthly operating profit: what remains after fixed expenses and other business costs.
- Effective hourly return: operating profit divided by the real time you spent running the business.
Those three numbers tell you much more than gross merchandise sales or the number of parcels shipped.
When should you raise your price?
A low margin is not automatically a signal to raise prices. First determine why the margin is low.
If product cost is the issue, negotiate sourcing or change the product. If advertising is consuming the margin, improve conversion or reduce paid acquisition. If returns are high, improve product descriptions, quality control, packaging, or customer expectations.
But if the business is running efficiently and the remaining margin still does not compensate you adequately for your time and risk, pricing deserves another look.
The Earnyx reality check
Selling online can absolutely be a worthwhile side hustle, but revenue screenshots are a poor measure of whether it is working.
Track every peso that disappears between the customer’s payment and the money you ultimately keep. Include the small costs. Include unsuccessful orders. Include the hours that nobody pays you for.
Then ask the question that matters: If you knew the real profit before starting, would you still choose to make the sale?