Handling shipping for an online store comes down to three decisions: how you’ll price shipping for customers, which carriers you’ll use, and whether you’ll pack boxes yourself or outsource fulfillment. Get those right, and shipping becomes a predictable cost rather than a constant headache. Here’s how to set up each piece.
Choose a Shipping Pricing Strategy
The price your customers see at checkout directly affects whether they complete a purchase. High or surprising shipping costs are one of the top reasons shoppers abandon their carts. You have three main approaches, and each one shifts the financial burden differently between you and your customer.
Free shipping is the strongest conversion driver. Customers expect it, especially if they shop on major marketplaces. The cost doesn’t disappear, though. You absorb it by building it into your product prices. If your average order is $50 and shipping typically costs $7, you’d raise prices enough to cover that $7 across your product mix. Free shipping works best when your margins are healthy enough to absorb the cost, or when your average order value is high enough that the shipping expense is a small percentage of the sale. Many stores offer free shipping only above a minimum order threshold (like “free shipping on orders over $75”) to increase cart sizes while limiting their exposure.
Flat rate shipping charges every customer the same amount regardless of what they order. A single flat fee, say $5.99, is simple for customers to understand and easy for you to advertise. The tradeoff is that you’ll overpay on light, small shipments and underpay on heavy ones, so it works best when your products are similar in size and weight. If you sell items that range from a phone case to a 40-pound toolbox, a single flat rate won’t make sense.
Real-time carrier rates pull the actual shipping cost from the carrier at checkout based on the package’s weight, dimensions, and destination. This is the most accurate approach and protects your margins, but it can surprise customers with unexpectedly high totals. It tends to work well for stores selling heavy, oversized, or highly variable products where absorbing or flattening the cost isn’t realistic.
Many successful stores blend these strategies. You might offer free shipping on orders above a certain dollar amount and charge a flat rate below it. Test what your customers respond to and track your cart abandonment rate after each change.
Pick Your Carriers
USPS, UPS, and FedEx are the three major domestic carriers, and each has strengths depending on what you ship. USPS is generally the cheapest option for lightweight packages under a pound or two, and it reaches every residential address including P.O. boxes. UPS and FedEx tend to be more competitive for heavier packages and offer stronger guaranteed delivery windows for time-sensitive orders. Regional carriers exist in some areas and can undercut the big three on specific routes.
You don’t have to choose just one. Most online stores use at least two carriers and select the best option per shipment based on weight, size, speed, and destination. Shipping software (covered below) automates this comparison for you.
Retail shipping rates, what you’d pay walking into a post office or UPS Store, are significantly higher than the commercial or business rates available online. USPS offers Commercial Rates when you buy and print labels through its Click-N-Ship service, and additional discounts through its Business Rate Card program. UPS and FedEx both offer volume-based discount programs that kick in as your shipping history grows. Even at low volumes, buying labels through shipping software rather than at a retail counter typically saves 20% to 50% per package.
Use Shipping Software to Save Time and Money
Shipping software connects to your store, imports orders, lets you compare rates across carriers, and prints labels in batches. It eliminates the need to manually type addresses or visit carrier websites one order at a time. Most platforms also generate tracking numbers and send tracking emails to customers automatically.
Several options exist at different price points. Pirate Ship is completely free and gives you discounted USPS and UPS rates, making it an excellent starting point for new stores. The limitation is that it only supports those two carriers and offers minimal integration options for custom workflows. Shippo connects to over 40 carriers worldwide and supports multi-carrier rate shopping, bulk label printing, and return label generation. ShipStation adds advanced automation rules and multi-warehouse inventory management but charges $29.99 or more per month for full features. Veeqo is a strong pick if you sell on Amazon, thanks to deep Seller Central integration.
If you’re shipping fewer than a handful of orders per day, a free tool like Pirate Ship or the built-in shipping features of your ecommerce platform (Shopify, WooCommerce, BigCommerce) will handle the job. As volume grows and you add carriers or sales channels, dedicated software pays for itself quickly through rate savings and time saved.
Set Up Your Packaging
Packaging affects both your shipping costs and how customers perceive your brand. Carriers charge based on either actual weight or dimensional weight (a formula based on the package’s length, width, and height), whichever is greater. Using a box that’s too large for the product means you’re paying for empty air.
Stock three or four box sizes that fit your most common product combinations snugly. Poly mailers, the flexible plastic envelopes, work well for soft goods like clothing and are cheaper and lighter than boxes. Padded mailers handle small, durable items. For fragile products, use corrugated boxes with sufficient cushioning material.
USPS offers free Priority Mail and Priority Mail Express boxes and envelopes, which you can order at no cost from usps.com. The catch is that you must ship them using the corresponding Priority Mail service, so factor that rate into your calculations. UPS and FedEx don’t offer the same free box programs for small businesses, so you’ll need to source your own packaging from suppliers like Uline, EcoEnclose, or Amazon.
Weigh and measure your most popular products once they’re packed. Enter those weights and dimensions into your shipping software as presets so you’re not grabbing a scale for every order.
Decide Between Self-Fulfillment and Outsourcing
When you’re starting out, packing and shipping orders yourself makes sense. You control quality, you learn what your customers order, and you avoid monthly fees. A spare room, garage, or small storage unit works fine for low volumes.
As orders increase, fulfillment starts competing with every other part of running your business. A third-party logistics provider (3PL) stores your inventory in their warehouse, picks and packs orders as they come in, and ships them on your behalf. Companies like ShipBob, ShipMonk, and Deliverr serve small to mid-sized ecommerce brands. They charge a combination of storage fees (per cubic foot per month), pick-and-pack fees (per order), and the actual shipping cost, often at volume-discounted rates you wouldn’t qualify for on your own.
There’s no single order count that makes outsourcing the right move. The tipping point depends on your product complexity, how much time fulfillment consumes, and whether you have the space. Many store owners find that somewhere between 100 and 300 orders per month is the range where the hours spent packing boxes start to outweigh the cost of a 3PL. Some stores stay self-fulfilled well beyond that by hiring part-time help or streamlining their packing stations. The key question is whether your time is better spent growing the business or taping boxes.
Handle Returns Smoothly
A clear return policy and a simple return process reduce customer service headaches and build trust. Decide upfront whether you’ll offer free return shipping, provide a prepaid label, or ask customers to pay for return postage. Free returns increase conversion rates but add cost, so many stores offer them selectively, covering returns for defective items but asking customers to pay for “changed my mind” returns.
Most shipping software lets you generate return labels when needed rather than including one in every box. This way you only pay for labels that get used. Include return instructions on your packing slip or in a follow-up email so customers know exactly what to do.
Shipping Internationally
Selling to customers outside the U.S. opens a much larger market but adds complexity. Every international shipment requires a customs declaration describing what’s in the package, how much it’s worth, and where it was made. U.S. Customs and Border Protection requires precise cargo descriptions in plain language, detailed enough to identify the size, shape, and characteristics of each item. Vague descriptions like “merchandise” or “gift” cause delays and can trigger inspections.
The biggest decision is who pays import duties and taxes. Under a “delivered duty unpaid” arrangement, your customer pays any duties and taxes when the package arrives in their country. This is simpler for you but creates an unpleasant surprise for customers who didn’t expect an extra charge at delivery. Under “delivered duty paid,” you calculate and collect those fees at checkout, so the customer pays the full landed cost upfront and receives the package with no additional charges. DDP creates a better customer experience but requires you to research duty rates for each destination country or use a service that calculates them automatically.
Start international shipping with a small number of countries where you see demand, rather than opening up worldwide fulfillment all at once. Services like Shippo and ShipStation support international label generation and customs form creation. Be aware that certain product categories, including batteries, liquids, food items, and anything pressurized, face restrictions or outright bans depending on the destination country and carrier.
Keep Shipping Costs Visible
Track your shipping spend as a percentage of revenue every month. For most small ecommerce businesses, shipping costs run between 10% and 15% of total revenue. If yours creeps above that range, look at whether you’re using oversized packaging, paying retail rates instead of commercial rates, or offering free shipping on too many low-margin items. Small changes, like switching from a box to a poly mailer where possible or negotiating a rate review with your primary carrier after six months of consistent volume, can shave meaningful dollars per package that compound over thousands of shipments.