If you rely on FedEx or UPS for shipping, a subtle rule change on August 18, 2025 may quietly hike your costs without you noticing.
What’s Changing
Starting August 18, FedEx will begin rounding every fraction of an inch in package dimensions (length, width, height) up to the next whole inch. That means 10.1″ becomes 11″—no more rounding down below the 0.5″ mark. UPS is implementing the same policy on the same date, aligning its rules with FedEx.
Why It Matters
This seemingly minor change significantly increases DIM weight, which is used when a package’s volumetric weight exceeds its actual weight. Calculated as:
Now, even minuscule fractions inflate volume, and ultimately your billing weight.
Real World Impact
A common example: a 12.2″ × 10.3″ × 6.4″ package once rounded to 12″ × 10″ × 6″, billed at 6 lb. Under the new rule, it becomes 13″ × 11″ × 7″, now billed at 8 lb—a 33% jump.
Forecasted cost increases: ~6.2% for ground shipping, ~9% for overnight services under typical rate structures.
One model calculation: a shipper sending 2,500 packages monthly could see an annual bump of $32,678—solely due to rounding changes, not volume increase.
Broader Context of this Change
This isn’t an isolated tweak; it’s part of a larger trend of midyear cost increases through surcharges and hidden tweaks. In 2025, FedEx already introduced new surcharges, lowered thresholds for extra handling, and raised inbound processing fees, among other changes
What You Can Do To Protect Your Margins
To combat the rising costs from the new rounding policy, PA recommends the following operational and strategic responses for its members:
Audit / optimize your packaging. Right-size your boxes to eliminate unnecessary air space. Consider using custom-fit or more compact packaging designs. Even trimming 0.5″ per dimension can save dollars over time.
Update software and systems. Ensure your rate calculators and WMS reflect the new rounding logic; old rules estimate shipping costs inaccurately.
Run impact simulations. Compare DIM weight and cost outcomes before and after August 18 to model your financial exposure and forecast cost increases.
Diversify carrier mix or adjust strategies. Since both FedEx and UPS now align, consider regional carriers like LaserShip or OnTrac, which may have more favorable DIM policies in certain zones.
Final Word
This may seem like a minute change in how inches get rounded, but it can measurably dent your shipping budget. The shared policy adoption by both major carriers means there’s no quick workaround through switching carriers.
The smart play is to proactively adjust: get leaner with packaging, update systems, model exposure, and explore alternative (or supplemental) shipping channels to protect your bottom line.
Every inch now matters, literally. Connect with the Procure Analytics Packaging Team to optimize packaging, protect your margins, and get ahead of these changes.