The shape of your mailpiece can determine the price you pay. First-Class Mail letters and USPS Marketing Mail letters that are square, rigid, or unusually shaped are subject to higher prices. Speaking of odd shapes, don’t mail bulky, odd-shaped things like pens or bottle caps in regular letter-size envelopes.

Do odd shaped envelopes need extra postage?

Letters that are square (height = width) are considered “odd-sized” or “nonmachineable” by the post office resulting in a higher price for postage. Square envelopes will cost you an extra $0.20 per letter in addition to the postage required for the weight and dimensions of your envelope.

Does it cost more to mail a rigid envelope?

If a flat-size First-Class Mail piece is rigid, is that piece charged the parcel rate? A. Yes. If the physical dimensions are within flat-size standards, and the mailpiece is rigid, it is classified and priced as a package (parcel).

What size envelope needs extra postage?

Any envelope larger than the maximum dimensions for a United States postal letter (6 1/8 inches high, 11 1/2 inches long and 1/4 inch thick) requires extra postage. An envelope that doesn’t exceed these dimensions and weighs one ounce or less will require only a single First Class postage stamp.

What is considered an oversized envelope?

The words large envelopes and flats are used interchangeably. Whatever you call them, flats must: Have one dimension that is greater than 6-1/8 inches high OR 11-½ inches long OR ¼ inch thick. Be no more than 12 inches high x 15 inches long x ¾ inch thick….Sizes for Large Envelopes and Flats.

DimensionMinimum*Maximum
Thickness1/4 inch3/4 inch

Do 6×9 envelopes require extra postage?

A 6” x 9” envelope weighing up to 1 ounce requires one $. 50 first class rate stamp. For each additional ounce, you’ll have to pay $0.21. Envelopes that exceed 3.5 ounces in weight or are thicker than ¼ inch will be charged the larger envelope rates.

How many stamps do I need for a 9 by 12 envelope?

The first ounce of a 9×12 envelope should use two Forever Stamps (equivalent to $1). Besides, you have to pay the extra stamps for each additional ounce equivalent to $0.20.

What is the largest envelope you can mail?

15″ x 12″
The maximum size for large envelopes is 15″ x 12″ x 3/4″ thick. The maximum weight for large envelopes is 13 ounces. A large envelope exceeding 13 ounces is classified as a Priority Mail item.

When did shape based postage go into effect?

Shape-based pricing went into effect May 14, 2007 and increased postage costs by an average of 7.6 percent, impacting the way most businesses send mail. Until the introduction of shape-based pricing, the USPS charged the same rate for all letters, flats, and parcels of the same weight.

How does the shape of a mailpiece affect the price?

The shape of your mailpiece can determine the price you pay. In some instances, certain shapes like squares and tubes are charged a higher price because those pieces must be processed manually. Generally, mailpieces that are 1/4-inch thick or less MUST be rectangular. Pieces more than 1/4-inch thick do not have to be rectangular.

When do the new postage rates go into effect?

The U.S. Postal Service announced new postage rates, effective August 29, 2021 as follows:

Which is cheaper postcard size mail or letter size mail?

Letter size mail costs less than flat-size mail. Parcels pay the highest price due to the cost of processing and delivery. In USPS Marketing Mail, there is no postcard price. You can mail postcard-sized pieces as USPS Marketing Mail, but you’ll pay the same as a letter.

How much does a large envelope cost USPS?

It exceeds the maximum letter height of 6-1/8″, but it meets the rectangular, uniform thickness, and flexibility criteria for a large envelope, so the mailpiece is classified as a large envelope and pays the 2-ounce rate — $0.97.

Shape-based pricing went into effect May 14, 2007 and increased postage costs by an average of 7.6 percent, impacting the way most businesses send mail. Until the introduction of shape-based pricing, the USPS charged the same rate for all letters, flats, and parcels of the same weight.

The shape of your mailpiece can determine the price you pay. In some instances, certain shapes like squares and tubes are charged a higher price because those pieces must be processed manually. Generally, mailpieces that are 1/4-inch thick or less MUST be rectangular. Pieces more than 1/4-inch thick do not have to be rectangular.

What’s the difference between flats and large envelopes?

Flats (Large Letter) The US flats postage rate is for large envelopes, as used when sending a document of letter or legal size or a magazine through the post. To qualify as a flat the item must have one dimension that is outside of the maximum for letter and comply with the following maximum dimensions.

Does a 6×8 envelope require extra postage?

First Class Mail A 6” x 9” envelope weighing up to 1 ounce requires one $. 50 first class rate stamp. For each additional ounce, you’ll have to pay $0.21. Envelopes that exceed 3.5 ounces in weight or are thicker than ¼ inch will be charged the larger envelope rates.

What size envelope can I send with a forever stamp?

To be eligible for mailing at the price for letters, a piece must be: Rectangular. At least 3-1/2 inches high x 5 inches long x 0.007 inch thick. No more than 6-1/8 inches high x 11-1/2 inches long x 1/4 inch thick.

Is there a size limit on envelopes?

Do 5×5 envelopes require extra postage?

A question that a lot of people ask is “do 5 x 7 envelopes require extra postage?” The answer to this is “no” as long as the items within the envelope do not exceed the maximum weight restrictions.