Ever wondered if there’s a simple, predictable way to ship packages without worrying about size or hidden fees? USPS’s “If It Fits, It Ships” promise has caught the eye of anyone looking for convenience and cost savings.
Understanding exactly how much this service costs can save you time and money—whether you’re sending gifts, running a small business, or decluttering your home. In this article, we’ll break down the pricing, guide you through the process, and share tips to get the most value from this popular shipping option.
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How Does USPS “If It Fits, It Ships” Pricing Work?
The USPS “If It Fits, It Ships” program is an easy, budget-friendly way to send mail using Priority Mail Flat Rate packaging. You choose an approved box or envelope, fill it with your items, and pay one flat price—regardless of the package’s weight (up to the specified limit) or destination within the United States. This shipping method is popular with small businesses, eBay sellers, and anyone who wants a fast, predictable, and simple shipping experience.
Let’s explore exactly how it works, what it costs, and how you can make the most of this option!
Understanding USPS Flat Rate Shipping
What Is Flat Rate Shipping?
Flat Rate Shipping means you pay a set fee to ship your package, no matter the weight or how far it’s going (as long as it’s within the U.S. and doesn’t exceed 70 pounds). USPS provides multiple box and envelope sizes for you to choose from—they’ll deliver the packaging for free.
The flat rate makes it easier to predict shipping costs in advance and eliminates the headache of weighing and measuring for every shipment.
Flat Rate Package Options
USPS offers a range of Flat Rate boxes and envelopes. Each type is designed for common shipping needs—from small gifts to hefty bundles of books.
Flat Rate Envelopes
- Priority Mail Flat Rate Envelope: Great for documents, cards, or small items.
- Legal Flat Rate Envelope: Slightly longer for legal documents.
- Padded Flat Rate Envelope: Offers extra cushioning for more delicate items.
Flat Rate Boxes
- Small Flat Rate Box: Perfect for jewelry, small electronics, or trinkets.
- Medium Flat Rate Box: Available in two shapes—the “side-load” and “top-load”—ideal for shoes, books, and larger gifts.
- Large Flat Rate Box: Great for heavy or bulky items, or shipments to family and friends overseas.
- Regional Rate Boxes: For heavier shipments going shorter distances.
Packaging Highlights
- You can order Flat Rate boxes and envelopes for free from USPS and have them shipped to your home or pick them up at your local post office.
- Only standard USPS-designated Flat Rate packaging qualifies for these prices—you can’t use your own boxes.
How Much Does “If It Fits, It Ships” Cost?
USPS updates its pricing periodically, but here are some typical price ranges for Flat Rate shipping (as of early 2024):
- Priority Mail Flat Rate Envelope: around $9.65
- Legal Flat Rate Envelope: around $9.95
- Padded Flat Rate Envelope: around $10.40
- Small Flat Rate Box: around $10.20
- Medium Flat Rate Box: around $17.10
- Large Flat Rate Box: around $22.80
- APO/FPO/DPO Large Flat Rate Box (for military/diplomatic mail): around $21.20
- Note: Actual prices may vary. Always check the USPS official website or visit your local post office for the current rates.*
Key Benefits of USPS Flat Rate Shipping
1. Simplicity and Predictability
- No need to weigh or measure your package (as long as it fits and is under 70 lbs).
- Know your shipping cost up front—no surprises at the counter.
2. Fast Delivery
- Priority Mail typically delivers in 1-3 business days nationwide.
- Tracking and insurance (up to $100) included at no extra cost.
3. Free Packaging
- Order boxes and envelopes online or pick up in person—no cost for the packaging itself.
4. Nationwide and APO/FPO/DPO Shipping
- Same rate applies regardless of how far the package travels within the U.S., including military and diplomatic addresses.
5. Easy Online Tools
- Print labels, pay for postage, and schedule free package pickup—all at your convenience.
Step-By-Step: How to Ship Using “If It Fits, It Ships”
1. Choose the Right Flat Rate Package
- Decide what fits your items best: envelope or box, and what size.
- Order free packaging from the USPS website or pick it up at a branch.
2. Pack Your Items Securely
- Ensure everything fits inside the packaging—box or envelope must close flat and be properly sealed.
- Add adequate cushioning, especially for fragile items.
3. Address and Label
- Clearly write out the recipient and your (return) address.
- You can handwrite or use an online shipping tool to print labels.
4. Pay for Postage
- Buy postage at the post office or print your label at home using USPS’s Click-N-Ship service.
- Applying postage in advance often saves you time.
5. Drop Off or Schedule Pickup
- Leave your package in the designated area at the post office or schedule a free USPS pickup at your home or office.
When Should You Use Flat Rate Shipping?
Flat Rate is ideal when:
- Your package is heavy for its size (think books, metal, small appliances, or hardware).
- You send the same type of package frequently (business shipments, care packages, etc.).
- You want predictable pricing, especially when shipping across the country.
- You’re sending to remote locations, including Alaska, Hawaii, or military/diplomatic addresses.
When Flat Rate May NOT Be the Best Deal
Flat Rate isn’t always the absolute cheapest option. Here’s when it might not be the best value:
- Lightweight Packages: If your item is very light and not going far, shipping in your own box (by weight and distance) could cost less.
- Odd-Sized or Oversized Items: Items that don’t fit well in USPS Flat Rate packaging may be cheaper or safer to send another way.
- Short-Distance/Local Shipments: Sometimes local or regional rates are cheaper.
Pro Tip: Use the USPS online shipping calculator to compare Flat Rate with other USPS options before shipping.
Practical Tips and Best Practices
Maximizing Your Flat Rate Box Value
- Choose the box size that matches your contents as closely as possible—don’t pay for extra space you don’t need.
- The heavier your package, the more you save—try to put Flat Rate boxes to use for dense, heavy items.
- Reinforce the box (particularly the seams) if necessary—but the package must still close naturally and seal without changing its shape.
Packing for Safety
- Use plenty of padding for fragile items. The box protects the outside, but interior movement can cause damage.
- Distribute items evenly in the box to avoid bulges that could void Flat Rate eligibility.
Save on Shipping
- Shipping supplies and USPS pickup are free—take advantage of them!
- Sign up for a USPS online account to print discounted labels and schedule pickups.
Cost Tips: Choosing the Best Shipping Option
- Compare before you commit: For light packages or local deliveries, First-Class Mail or standard Priority Mail (by weight/zone) might be cheaper.
- Know your destination: Flat Rate shines for distant states (coast to coast) and APO/FPO destinations.
- Business bulk shipping: If you ship frequently, look into USPS Commercial Base or Commercial Plus Pricing for added discounts.
- Regional options: For medium to heavy packages traveling short distances, USPS Regional Rate boxes could provide better rates than standard Flat Rate.
Shipping Internationally or to APO/FPO/DPO
- Flat Rate boxes can also be used for certain international destinations, though pricing is higher than domestic shipping.
- APO/FPO/DPO (military or diplomatic) shipments benefit from a slightly discounted Large Flat Rate Box rate.
- Customs forms are required for international or APO/FPO/DPO shipments—complete online to save time.
Common Challenges and How to Avoid Them
Box Must Close Properly
If your package doesn’t close flat and seal using normal tape (no bulging or “creative” sealing), it doesn’t qualify for Flat Rate.
Maximum Weight Limit
All Flat Rate packages have a 70-lb weight limit. Overweight packages get rejected or require additional postage.
Only USPS Flat Rate Boxes Work
You must use official USPS-branded Flat Rate boxes or envelopes—reusing Amazon or other branded boxes isn’t allowed.
Frequently Asked Questions (FAQs)
What happens if my Flat Rate box weighs more than 70 lbs?
USPS will not accept it for Flat Rate shipping. You’ll need to repack your items to get under the weight limit or use standard shipping, which can be much more expensive.
Can I reuse a Flat Rate box for another shipment?
Yes, as long as the box is still sturdy, clean, and undamaged. However, you can’t alter the packaging or use a Flat Rate box to ship with a different USPS service (like First-Class Mail).
Is insurance included with Flat Rate shipping?
Yes, USPS Priority Mail Flat Rate services include up to $100 of insurance and package tracking. You can purchase additional insurance if needed.
Can I fit anything in a Flat Rate box?
Almost—there are restrictions. You can’t ship hazardous materials, perishables, or illegal items. Also, the box must close flat and not be altered in size or shape.
How can I get free Flat Rate boxes and envelopes?
Order them online via USPS and have them delivered to your address at no cost, or pick them up at any post office branch.
Summary
USPS “If It Fits, It Ships” (Flat Rate shipping) is a fantastic tool for anyone who wants fast, predictable, and straightforward shipping within the United States. With free packaging, easy pricing, and quick delivery, it’s a great solution for both personal and business needs. Remember to compare your options, pack securely, and take advantage of the included features for the best results. Happy shipping!
