Ecommerce Profit Calculator for Texas Ecommerce Sellers

Last reviewed: 17 May 2026

Calculate TX ecommerce profit with state sales tax 6.25% (up to 8.25% local), franchise tax, and no state income tax. Per-order and aggregate margin.

Ecommerce profit per unit = Selling Price − Product Cost − Platform Fee − Shipping − Ad Spend − VAT. On a $29.99 Amazon FBA sale with $8 product cost, 15% platform fee, $3.50 shipping, and $2 ads, you net about $12. Most sellers underestimate platform fees and ad spend.

A Texas ecommerce profit calculator returns per-order and aggregate margin after Texas state sales tax (6.25% state + up to 2% local, capped at 8.25%), franchise tax for entities above the $2.47M revenue threshold (2026), and zero state personal income tax. Marketplace facilitator law makes Amazon, eBay, Etsy, and Walmart liable for collection on third-party sales. Texas Comptroller Rule 3.286 and Publication 94-108 are authoritative.

Texas is one of the most ecommerce-friendly US states for both DTC operators and marketplace sellers. The combination of no state personal income tax (so pass-through profit flows directly to the operator at federal rates only), a relatively modest 6.25-8.25% combined sales tax, a high $500,000 economic nexus threshold for remote sellers, and a $2.47M franchise tax floor means a Texas-domiciled ecommerce business under $2.5M revenue is genuinely free of state-entity tax — only federal income tax applies.

The TX ecommerce P&L stack:

Per-order variable costs: - COGS (landed cost: supplier + freight + duties + packaging) - Payment processing: Stripe 2.9% + $0.30, Shopify Payments 2.4-2.9% + $0.30, PayPal 3.49% + $0.49 - Fulfilment: $3.50-10 per order for 3PL; Texas (Dallas, Houston, San Antonio) is a top-3 US 3PL hub with competitive rates and 2-day reach to 90% of US population - Shipping: TX-centric origin yields 8-15% lower blended shipping cost than coast-only origin - Sales tax: 6.25-8.25% collected and remitted to TX Comptroller — Texas uses origin-based sourcing for intrastate sales (rate based on seller's location), destination-based for interstate - Marketing CAC (ad spend ÷ new customers)

Period costs: - Software stack (Shopify, Klaviyo, Postscript, returns) — 3-7% of revenue - Salaries (TX is materially cheaper than CA/NY for fulfilment and ops staff) - Returns and refunds (apparel 20-30%; electronics 8-15%; beauty 5-10%)

TX-specific tax and compliance overhead: - Sales and use tax permit: required to collect TX sales tax; filing frequency assigned monthly/quarterly/annually based on liability - Franchise tax: applies to entities (LLCs, corporations, partnerships) with annualised revenue above $2.47M (2026 no-tax-due threshold). Rate is 0.375% (retail/wholesale) or 0.75% (other) of taxable margin. Sole proprietors are exempt - Marketplace facilitator collection: under HB 1525 (effective Oct 2019), Amazon, eBay, Etsy, Walmart, Mercari collect TX sales tax on third-party sales — direct DTC sellers carry that obligation - Economic nexus for remote sellers: $500,000 in TX revenue in the preceding 12 months - Single Local Use Tax Rate: TX allows remote sellers to elect a uniform 1.75% local tax (combined with 6.25% state = 8%) for all TX sales, instead of tracking every local jurisdiction — a meaningful admin simplification

Worked example: a Houston-based DTC supplements seller, $55 average order value, 52% gross margin pre-tax. Per-order: $55 revenue − $26.40 COGS − $1.90 Stripe − $5 fulfilment (TX 3PL) = $21.70 contribution before marketing. TX sales tax collected ($4.40 at 8%) is a pass-through. After $10 blended CAC, net per-order is $11.70 — better unit economics than the LA equivalent purely on lower fulfilment cost, lower payroll burden, and zero state income tax on the resulting profit.

For specifics, see Texas Comptroller Publication 94-108 (Engaged in Business in Texas) and Rule 3.286 (Seller's and Purchaser's Responsibilities). Pair with /ecommerce-profit-calculator/california for the high-cost-state contrast.

See the formula

See parent calculator at /ecommerce-profit-calculator for the full formula reference.

Frequently Asked Questions

Why is my ecommerce profit lower than I expected?

Most sellers underestimate their true costs. Platform fees (10–20%), shipping (10–25% of revenue), advertising (10–30%), and payment processing all erode your margin. This calculator adds all these up — the result is often a shock for sellers who only calculated product cost vs. selling price.

What are Amazon FBA fees?

Amazon FBA (Fulfilled by Amazon) charges a referral fee (typically 8–15% depending on category) plus fulfilment fees based on product size/weight (typically $3–$8 per unit). There are also monthly storage fees. Enter your total fee as a percentage of selling price in this calculator.

How do I calculate Etsy profit?

Etsy charges a 6.5% transaction fee, a payment processing fee (3–4%), and a listing fee ($0.20 per item). Enter 6.5% as the platform fee and add the listing fee to your fixed costs. Etsy also collects VAT in the UK and SA on your behalf.

What profit margin should I target in ecommerce?

Target a minimum net profit margin of 20–30% per unit after all fees and costs. Below 15% leaves no room for returns, price competition, or ad spend increases. Below 10% is generally not viable as a sustainable ecommerce business.

How does advertising cost affect ecommerce profitability?

Advertising cost per sale (also called ACOS — Advertising Cost of Sale on Amazon) directly reduces your net profit. An ACOS of 30% on a $30 product means you spend $9 in ads per sale. Tracking ad spend per unit sold (not total campaign spend) is essential for accurate profitability analysis.

How does VAT change my ecommerce profit in the UK and SA?

If you are VAT-registered, the gross selling price is shown inclusive of 20% VAT in the UK or 15% in South Africa. You owe that VAT to HMRC or SARS, so it never reaches your bank account. The calculator strips it out before calculating profit. In the US, sales tax is collected at checkout and remitted to the state — also not your money. Always work in net-of-tax numbers when comparing per-unit profitability.

What is the biggest mistake new ecommerce sellers make on profit?

Pricing based on product cost alone and ignoring variable costs per sale. A $20 product that cost $8 looks like a 60% margin — until you subtract a $3 platform fee, $4 shipping, $3 ad spend, and $0.60 in payment processing. Real net profit is $1.40, or 7%. Run every product through this calculator before launching, and re-run quarterly as fees and ad costs change.

What if I have returns or refunds — how do I factor those in?

Returns are usually expressed as a percentage of orders (5–15% is typical, higher in apparel). To bake them in, increase your platform fee or shipping cost slightly to reflect the real cost per sold-and-kept unit. For example, a 10% return rate on a product that costs $4 to ship adds about $0.40 in absorbed shipping per net sale. Returns also forfeit the original ad spend, so add a small premium to ACOS too.

What if my advertising cost per sale is zero?

That means you are getting all your traffic from organic, repeat, or referral sources — the most profitable kind of revenue. The calculator will return a higher net profit, which is correct, but be cautious about assuming this can scale. Most ecommerce businesses need paid ads to grow beyond their existing audience. Model the same product with a realistic ACOS (20–30%) to see what scaled economics look like.

How is ecommerce profit different from a regular profit margin calculation?

A regular profit margin treats cost as a single COGS line. Ecommerce profit breaks variable costs into four moving parts — product cost, platform fee, shipping, and ads — because each one behaves differently. Platform fees scale with price, shipping scales with weight, and ad cost scales with competition. Treating them separately exposes which lever to pull when margin slips, instead of just "costs are up."

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Methodology & sources

Rates last verified: May 2026

Read the full methodology →

Platform fee defaults: Amazon FBA 15%, Etsy 6.5%, eBay 13%, Shopify 2.9%. Headline rates only — your actual fees may include category-specific premiums or volume discounts. Check your platform's seller dashboard for the exact split.

Primary sources

Rates are reviewed annually or when a region changes its headline rate. If you spot one that's out of date, email [email protected].

For information only. This calculator does not constitute financial, accounting, or tax advice. Consult a qualified professional before making business decisions.

Try these scenarios

Pre-filled examples — click any chip to load the inputs and result.

How to calculate ecommerce profit per unit

Pick your platformClick Amazon FBA, Etsy, eBay, Shopify, or Custom — the platform fee % pre-fills accordingly.
Enter selling price and product costYour listing price and the landed cost of the product to you (including shipping into your warehouse).
Add shipping and ad spend per saleOutbound shipping cost (if you cover it) and the advertising cost attributable to each sale.
Set the VAT rate (optional, UK/SA)VAT is removed from the gross price for VAT-registered sellers in UK and SA.
Read net profit and net margin per unitThe result shows what actually reaches your bank after every deduction.

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Written by

James Blanckenberg

Founder, BusCalcTools

Founder of BusCalcTools and FinnCalc. Builds practical financial calculators for small business owners and freelancers across the US, UK, and South Africa.

Editorial review by: James Blanckenberg, Founder & Editor

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