Most articles on this keyword are written for an office with a lease, a travel budget, and a paper problem. If you run an operating Shopify or print-on-demand store, that list barely touches your real costs. Your operating expenses are the ones that repeat on every order and every month, and they are where the profit hides.
This guide walks the specific line items an online store owner actually controls, with worked numbers. It sits alongside the broader breakdown of the economics of running an online store, and it stays focused on cuts that survive contact with your P&L.
First, know what your operating expenses actually are
Operating expenses (OpEx) are the recurring costs of keeping the store running and fulfilling orders. For a store, the big ones are: cost of goods sold (COGS) paid to your supplier, ad spend, platform and app subscriptions, payment processing, and the loss column — refunds, reprints, and chargebacks.
That last bucket is the one general-business guides skip entirely, and for a print-on-demand seller it is pure operating cost. If you want a cleaner mental model of how COGS flows through your books, the down-funnel walkthrough on recording cost of goods sold is the companion to this piece.
Get your operating expense ratio before you cut anything
Say your store does 340 orders a month at a $31 average order value. That is $10,540 in monthly revenue. Now lay the costs against it:
| Line item | Monthly amount |
|---|---|
| Revenue (340 × $31) | $10,540 |
| Supplier COGS (340 × $12) | $4,080 |
| Meta ad spend | $2,800 |
| Payment processing (~2.9% + 30¢/order) | $408 |
| Platform + apps (Shopify plan + add-ons) | $290 |
| Refunds / reprints / chargebacks | $310 |
| Total operating expenses | $7,888 |
| Operating profit | $2,652 |
That is an operating expense ratio of roughly 75% and an operating margin near 25%. The numbers above are an illustrative example, not a benchmark — but the structure is real, and it tells you where to aim: the two biggest lines, COGS and ad spend, are where a 10% cut is worth more than eliminating an entire app subscription.
1. Attack ad spend efficiency, not just the ad budget
Ad spend is usually the largest controllable line, so it is tempting to just cut it. Don't — cutting the budget cuts orders too. The real lever is cost per acquired order.
In the example above, $2,800 buys 340 orders, so you are paying about $8.24 to acquire each one. If tighter targeting and killing your worst-performing ad sets pull that to $6.80, you save $490 a month without losing a single sale. That $490 drops straight to operating profit — an 18% bump on the $2,652 above.
The move is auditing spend at the ad-set level, not the account level: find the 20% of spend returning almost nothing and reallocate it. This is operations work, and it belongs in the same routine as the rest of your ecommerce operations management.
2. Renegotiate and consolidate supplier costs
COGS is your second-biggest line and the most negotiable one. Consolidating orders with a single supplier, moving up a volume tier, or switching a product to a cheaper base can shave a dollar or two per unit — and a dollar off a $12 COGS on 340 orders is $340 a month.
Contract renegotiation is not a soft lever. Firms that negotiate systematically capture around 9.2% in savings, according to a World Commerce & Contracting study cited by Brex's cost-reduction guide. Applied to a $4,080 monthly COGS line, that scale of improvement is roughly $375 a month.
The deeper play is using AI to find where COGS is quietly eroding margin across your catalog — a shift covered in the AI cost of goods sold transformation breakdown. You cannot renegotiate what you have not measured per product.
3. Trim the app and software stack
Every store accumulates apps: a reviews widget, an upsell tool, three things you installed for a promo and forgot. This is the one place the generic advice is right, and it is easy money.
Optimizing and cutting unused software configurations can recover around 30% of that spend, per Gartner figures cited in Brex's guide. On a $290 monthly stack, that is ~$87 back. Small next to COGS, but it is a five-minute audit with no downside to orders.
While you are in the billing settings, look at payment timing too: paying some vendors early for a 2-3% discount is a standard lever — QuickBooks notes that on $100,000 of operating costs, a 2-3% early-payment discount can save around $2,000 a year.
4. Stop the silent operating expense: chargebacks and refunds
Here is the line no general guide models, and it is bigger than it looks. A chargeback is not a $15 problem — a lost dispute typically costs 2x to 2.5x the order value once you add the unrecoverable COGS, shipping, ad spend, and the fee, according to chargeback.io.
The Shopify Payments chargeback fee for US merchants is $15 per dispute, pulled from your payout immediately along with the disputed amount, per chargeback.io's Shopify guide. And you rarely win: manual dispute responses succeed only about 8-20% of the time, because issuers screen for structured evidence, not explanations, per chargeflow.io.
For print-on-demand the math is worse, because a printed item can't be restocked — the COGS is gone on every refund. Take a lost dispute on a $50 POD order:
| Line item | Amount |
|---|---|
| Disputed amount clawed back | $50.00 |
| Shopify chargeback fee (not refunded on a loss) | $15.00 |
| Unrecoverable COGS (can't restock a printed item) | $18.00 |
| Shipping already paid | $6.00 |
| Ad spend to acquire the customer | $8.00 |
| Total out of pocket | $97.00 |
That is ~$97 lost on a $50 sale — right in the 2x-2.5x range chargeback.io describes. Prevention is far cheaper than any dispute: ship with tracking and delivery confirmation, use a clear billing descriptor, and send proactive shipping updates, since most disputes surface 30-90 days after purchase when customers lose track of orders.
5. Reconsider your platform fees
If you still sell primarily on a marketplace, platform fees may be your quietest large expense. Etsy's combined take — listing, transaction, processing, and Offsite Ads — approaches 10-13% of every sale, and sellers above roughly $10,000 in annual revenue face a mandatory 12% Offsite Ads fee on ad-attributed orders, per Sherocommerce.
In a modeled scenario at about 100 orders a month averaging $50, moving to Shopify saved roughly $335 a month even after the subscription, according to that same Sherocommerce analysis. The honest caveat: a marketplace also hands you traffic a new store has to earn, so the switch pays off at scale, not on day one. Verify current fee schedules before you act — they change often.
The profit angle every generic guide skips
Cutting an operating expense only matters if you can see it land in per-order profit. Most owners can't, because their true cost per order is scattered across the Shopify payout report, the ad account, the supplier invoice, and the refund column — and nobody reconciles them line by line.
That is the exact job Victor, the AI employee inside PodVector AI, is built for. Victor connects to Shopify, Meta Ads, Google Ads, Printify, Printful, Gelato, and Klaviyo, computes your true per-order profit, and delivers the reports to your Google Drive — so when you cut ad-set waste or renegotiate COGS, you see the margin move. Every write action Victor takes is approval-gated: it drafts, you approve, then it executes.
Victor is not a dashboard you have to read — it is an operator that does the reconciling for you. If you want to know which operating expense is actually eating your margin, put Victor on your store.
FAQs
What are the biggest operating expenses for an online store?
For most operating Shopify and print-on-demand stores, the largest recurring costs are supplier COGS and ad spend, followed by payment processing, platform and app subscriptions, and the loss column of refunds, reprints, and chargebacks. General-business advice fixates on office and travel costs you probably don't have; your money is in the lines that scale with every order.
How do I calculate my operating expense ratio?
Add up your recurring operating costs for the month — COGS, ad spend, processing, subscriptions, and refund/chargeback losses — and divide by revenue for the same month. In the worked example above, $7,888 in operating expenses on $10,540 of revenue is a ratio of about 75%, leaving a 25% operating margin. Track it monthly so you can tell whether a cut actually moved the number.
Is cutting ad spend a good way to reduce operating expenses?
Cutting the ad budget outright usually cuts orders with it, so it lowers costs and revenue together. The better lever is efficiency: lower your cost per acquired order by killing underperforming ad sets and reallocating that spend. Dropping cost-per-order from around $8.24 to $6.80 on 340 orders saves roughly $490 a month with no lost sales.
Why do chargebacks count as an operating expense?
Because they are a recurring, predictable cost of processing card payments — not a rare accident. A lost dispute typically runs 2x to 2.5x the order value once you include unrecoverable COGS, shipping, ad spend, and the $15 fee, per chargeback.io. For print-on-demand the COGS is always gone, since a printed item can't be restocked, so prevention through tracking and proactive updates is one of the highest-return cuts available.
Will going paperless and cutting subscriptions meaningfully lower my costs?
They help, but they are small relative to COGS and ad spend. Trimming an unused app stack might recover tens of dollars a month; a modest improvement in cost per order or a renegotiated supplier rate recovers hundreds. Do the easy subscription audit, then spend your real attention on the two lines that scale with volume.