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Profitbusiness-planning9 min read

Why Is My Profit Lower Than Expected?

Symptom

Sales look healthy, but month-end profit keeps disappointing.

When 'we had a great month' becomes 'where did the money go?', the answer is rarely one big problem — it's usually 2–3 small leaks compounding. Use this list to audit each one in order.

Likely causes & fixes

  1. Cause 1

    Platform and payment fees you forgot to model

    Etsy/Shopify/eBay/Amazon stack listing fees, transaction fees, payment processing, currency conversion, and offsite ad commissions. Most owners model 2–3 of those, not all of them.

    Fix

    • Pull a full fee export for the month and total every line item.
    • Compare against the per-order fees in your pricing calculator. If real fees are 2+ percentage points higher, repricing is overdue.
    • Use the Hidden Business Fees Calculator to surface the categories you weren't tracking.
  2. Cause 2

    Returns, refunds, and chargebacks

    A 6% return rate on a 25% margin product wipes out roughly a quarter of profit — and most owners only see the headline revenue number, not the net.

    Fix

    • Calculate your true net revenue: gross minus refunds, return shipping, and restocking losses.
    • Run the Return & Refund Calculator monthly to see the real margin impact.
    • Fix the top return reason first — usually sizing, expectations, or shipping damage.
  3. Cause 3

    Shipping costs creeping above what you charge

    Carrier rates rise, package weights change, and 'free shipping' promotions stay live long after they should. The gap silently comes out of margin.

    Fix

    • Pick 10 random orders from last month, calculate actual shipping spent vs. shipping charged.
    • If you're losing more than $1/order, raise prices or recalibrate free-shipping thresholds.
    • Re-run the Etsy Shipping Profit Calculator or your store's equivalent quarterly.
  4. Cause 4

    COGS drift — supplier prices went up, your prices didn't

    Materials, packaging, and POD base costs rise quietly. If you priced products 12 months ago and never re-checked COGS, you're earning last year's margin on this year's costs.

    Fix

    • Re-cost your top 10 best-selling SKUs against current supplier invoices.
    • Raise prices on anything whose margin dropped more than 3 percentage points.
    • Use the Product Profitability Calculator to spot SKUs that have quietly turned into losers.
  5. Cause 5

    You're not paying yourself for hours worked

    Profit can look fine on paper while your effective hourly rate is below minimum wage. That's a profit problem disguised as a time problem.

    Fix

    • Track every business hour for two weeks — production, listing, packing, admin, marketing.
    • Run the True Effort Calculator: profit ÷ hours = real hourly profit.
    • If your hourly is below your target, either raise prices, cut the slowest-margin product, or systemise the time-eating tasks.

Frequently asked questions

What's a healthy net profit margin for a small e-commerce business?
10–20% net margin is typical for handmade/POD. Below 10%, every small cost swing pushes you into the red. Above 20% usually means strong brand pricing.
How often should I recalculate true profit?
Monthly at minimum. Quarterly is too late to catch fee creep, COGS drift, or a quietly losing SKU.
Which leak is usually biggest?
For platform sellers, it's almost always fees + offsite ads underestimated. For Shopify and DTC, it's shipping cost vs. shipping charged.