What Does Flat Rate Shipping Mean? Check Our Cheat Sheet (2024)

With e-commerce rapidly expanding each year, the process of shipping will need to be able to scale along with it. More than half of retailers say the cost of shipping is their biggest business challenge. And as consumers get more accustomed to free and expedited shipping, not to mention free returns, e-commerce brands will need to find ways to keep costs in check and streamline fulfillment operations.

Flat rate shipping is one option that can make it easier to predict shipping expenses and potentially help you reduce shipping costs.

If you’re not super familiar with flat rate shipping, or just want to learn more about how it might benefit your e-commerce business, consider this your cheat sheet.

What Does Flat Rate Shipping Mean?

Plain and simple, Flat rate shipping refers to the single, uniform fee charged to ship a package, given that it meets the stipulations set by the flat rate shipping provider.

Flat rate shipping is a simplified process that allows consumers the convenience of an uncomplicated shipping option, and the ability for businesses to forecast shipping expenses with greater accuracy and predictability. As an added bonus, it can be especially helpful for shipping heavier items.

When people mention “flat rate shipping,” they’re often referring to USPS Flat Rate shipping. USPS Priority Mail Flat Rate shipping delivers within three days (not including Sunday). These shipping boxes can be an easy-to-use, cost-effective shipping option.

Flat Rate vs. Standard Shipping

While flat rate shipping includes a consistent fee for packages, standard shipping varies more. Standard shipping rates might be applied based on size, shape, weight, distance traveled, or even package type. Each carrier sets their own standard shipping rates.

How Much Does Flat Rate Shipping Cost?

Flat rate shipping has a uniform cost, but this varies depending on the envelope or box you use to send the package.

Here are how the USPS Flat Rate fees break down:

What Does Flat Rate Shipping Mean? Check Our Cheat Sheet (1)

How Long Does Flat Rate Shipping Take?

USPS Flat Rate shipping generally takes between one and three days, excluding Sunday, depending on package origin and its final destination. Packages shipped via flat rate are sent via USPS Priority Mail.

Should You Use Flat Rate Shipping?

In short, It depends. Flat rate shipping is great in some people and not so great for others.

For one, you need to make sure your shipping software will accommodate USPS Flat Rate shipping. If it doesn’t, you won’t be able to take advantage of this option. Or, you’ll need to find a new shipping software.

Beyond that, it really boils down to the cost. Use a shipping calculator to help you compare.

Shipping costs depend on a few key factors:

Distance traveled: Referred to as zones, USPS applies fees based on the origin and destination zones of each package. Typically, standard shipping costs are based on the distance between zones—the further you ship, the more it costs.

Weight: All carriers institute weight limits for their uniform shipping options. USPS flat rate boxes allow up to 70 pounds of weight, making anything heavier ineligible for the flat rate shipping option.

Size: Flat rate shipping is only available in specific box sizes and shapes. Some items cannot be shipped via flat rate shipping because they will not fit in flat rate boxes.

Overall, small, heavy objects are ideal for USPS Flat Rate shipping, especially when traveling far distances. Bed sheets, books, metal objects, and various home goods are perfect candidates for flat rate shipping. Lightweight objects might be better suited for other shipping methods.

Related: When is USPS Priority Mail Flat Rate Cheaper than USPS Priority Mail? >

Lower costs aside, flat rate shipping also offers a fair amount of convenience. You can order USPS Flat Rate boxes online or pick them up from the post office free of change. Then being able to rely upon consistent shipping charges will make forecasting and planning easier and more straightforward for your business.

Moving Forward With Your Shipping Needs

If you’re looking for USPS shipping software that can print labels and score you discounted rates, it’s time to explore Shippo.

Shippo is a multi-carrier API and web app that helps retailers, marketplaces and platforms connect to a global network of carriers. Businesses use Shippo to get real-time rates, print labels, automate international paperwork, track packages and facilitate returns. Shippo provides the tools to help businesses succeed through e-commerce shipping.

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What Does Flat Rate Shipping Mean? Check Our Cheat Sheet (2024)

FAQs

What is the meaning of flat rate shipping? ›

Flat rate shipping is a type of shipping where the price is determined by the packaging, such as the envelope or box, rather than the weight or dimensions of an item. This method standardizes shipping costs, eliminating the variations caused by different weights, dimensions, and delivery locations.

How do I fill out a USPS flat rate box? ›

To use USPS flat rate shipping, you need to get a USPS flat rate box from your local USPS office (small, medium, or large size), add no more than 70 pounds of contents that fit inside the box, label an address, and ship the box at a USPS office using Priority Mail.

How do you flat rate a ship? ›

How does USPS flat rate shipping work?
  1. Measure the items you plan to ship to determine whether they can fit into a USPS flat rate envelope or box. ...
  2. Obtain a USPS flat rate box or envelope. ...
  3. Place the items to be shipped in the envelope or flat rate box and affix a shipping label with the destination address.
Sep 19, 2023

What is UPS flat rate shipping? ›

At UPS, flat-rate box sizes range from extra-small (1-100 cubic inches) starting at $9.45 to Extra-Large (1,051-1,728 cubic inches) starting at $24.30. The wide variety of UPS Simple Rate sizes ensures that customers can send anything from small jewelry items to kitchen appliances for a guaranteed flat-rate.

What is the meaning of flat rate? ›

A flat fee, also referred to as a flat rate or a linear rate refers to a pricing structure that charges a single fixed fee for a service, regardless of usage. Less commonly, the term may refer to a rate that does not vary with usage or time of use.

What is an example of a flat rate? ›

Flat Rate Examples

-An HVAC technician might charge a flat rate of $85 to service a furnace, regardless of how long the job takes. -A plumber might charge a flat rate of $125 to clear a clogged drain, regardless of how long it takes to complete the job.

Can I use my own box for USPS flat rate? ›

To ship via Flat Rate, you need to use the Flat Rate branded boxes. To use Cubic and weight-based options, you must use your own packaging or USPS Priority Mail boxes.

How does USPS flat rate work? ›

USPS Flat Rate is a class of packaging that provides specific-sized boxes and envelopes for use with USPS Priority Mail services. They can be shipped anywhere in the US for one flat fee regardless of weight, so long as the parcel weighs fewer than 70 lbs.

Is it cheaper to use a flat rate box or your own box? ›

For shipments traveling shorter distances, Zones 1-4, and weighing less than 20 lbs, using your own packaging for weight-based rates may be a better value. Across all zones, though, shipments weighing over 25 lbs will ship for less in a Flat Rate Large Box.

When to use flat rate shipping? ›

A good rule of thumb is to ship small, heavy packages via Flat Rate, and large, lightweight items via Priority Mail. But there's more to consider than just that. In addition to size and weight, you'll want to think about where the package is going.

Who delivers flat rate shipping? ›

Up to a certain weight, there is valuable predictability in flat rate shipping, meaning it virtually eliminates the need to weigh packages if the contents weigh less than 70lbs for USPS or 50lbs for UPS and FedEx. The major carriers' flat rate options are called USPS Priority Mail® and FedEx One Rate®.

Who pays flat rate shipping? ›

Flat rate shipping (or "flat shipping") is when the seller specifies a fixed shipping rate that the buyer is to pay, regardless of package dimensions or weight, and regardless of distance.

Is it cheaper to send a 20 lb box UPS or USPS? ›

If you're simply looking for the cheapest way to ship a single 20-pound package, USPS Priority Mail is generally one of the cheapest options. The cost to ship the 20-pound package depends on travel distance and typically ranges from around $13 to $50.

What is the cheapest way to ship a package? ›

Generally, USPS Ground and Priority Mail are the most affordable shipping options.

How do companies offer flat rate shipping? ›

Flat rate shipping involves charging a consistent and predictable shipping price to customers, regardless of the size or weight of the order. Free shipping can be offered to customers for all orders or for orders above a certain amount.

How long does flat rate shipping take? ›

Flat Rate shipping typically takes one to three days to arrive at the destination – excluding Sundays or certain holidays. All flat rate shipping will be processed as USPS Priority Mail. 1 – 3 days is the estimated delivery date.

What's the difference between flat rate and standard shipping? ›

There is a set delivery time with flat rate shipping that cannot be changed. Standard shipping is based on ordinary shipping prices, which are computed based on pin codes and zones. A flat rate simply indicates that any item may be sent for the same fee, generally within zones.

What is the benefit of flat rate shipping? ›

One of the most significant advantages is the predictability of shipping costs. With flat-rate shipping, businesses can calculate the exact shipping cost upfront, eliminating any surprises or unexpected fees.

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