Both FedEx and UPS will start rounding all fractional package dimensions up to the next whole inch on August 18th. FedEx made this announcement in July 2025, with UPS matching the move in early August.
This rounding change means more packages will be billed at higher weights, driving up costs even if your shipping volume stays the same. For high-volume operations, these incremental increases can snowball into tens of thousands in annual overcharges.
See the potential implications of this key shipping change, and find out how automation can help buffer rising costs from dimensional weight rounding.
What Is Dimensional Weight?
Dimensional weight (DIM weight) is a pricing method used by carriers to account for the space a package occupies in relation to its actual weight. It’s calculated using the formula:
DIM Weight = (Length × Width × Height) / DIM Divisor
If the dimensional weight is greater than the actual weight, the higher value is used to calculate shipping charges.
This pricing model ensures that large, lightweight packages don’t take up valuable cargo space without contributing proportionally to revenue. However, with the new rounding rule, even minor increases in package dimensions can push shipments into a higher billing tier.
What’s Changing: Rounding Fractional Measurements for Package Dimensions
Previously, FedEx and UPS allowed fractional dimensions to be used in DIM weight calculations. Now, each dimension will be rounded up to the nearest whole inch before the DIM weight is calculated.
Example: Before vs. After Weight Rounding Change
| Package Dimensions | Old Rule (Used As-Is) | New Rule (Rounded Up) |
| 11.1″ × 8.5″ × 6.2″ | 11.1 × 8.5 × 6.2 = 584.07 | 12 × 9 × 7 = 756 |
| DIM Weight (Divisor = 139) | 584.07 / 139 ≈ 4.2 lbs | 756 / 139 ≈ 5.4 lbs |
| Billed Weight | 5 lbs (rounded up) | 6 lbs (rounded up) |
That’s a 20% increase in billed weight, all from a single rounding rule.
What This Means for High-Volume Shippers
For a business shipping 2,500 packages per month, this change could result in over $30,000 in additional annual shipping costs, even if shipping volume and rates remain constant. Multiply that across multiple carriers and locations and the financial impact becomes even more significant.
This is especially concerning for:
- E-commerce retailers shipping lightweight goods
- Subscription box companies
- 3PLs and fulfillment centers
- Manufacturers with irregularly shaped packaging
Why Manual Freight Audits Are No Longer Enough
With increasingly complex pricing models and frequent carrier updates, manual invoice audits are no longer sustainable. Finance and operations teams face challenges such as:
- Delayed dispute windows (often 15–30 days)
- Human error in matching invoices to freight bills
- Lack of visibility into surcharge drivers like dimensional weight
These inefficiencies can lead to costly overpayments, missed disputes, and inaccurate accruals.
Ease These Pains with Freight Invoice Automation (FIA)
Avantiico’s Freight Invoice Automation (FIA) solution for Microsoft Dynamics 365 Finance & Supply Chain Management is designed to help businesses stay ahead of these changes by automating and optimizing freight invoice reconciliation.
Key Benefits:
- Automated Invoice Matching: Import freight invoices via CSV or API and match them to freight bills using flexible, rule-based logic—no manual effort required.
- Real-Time Exception Handling: Instantly flag dimensional weight surcharges, accessorial fees, or mismatches for timely dispute and recovery.
- Streamlined AP and Accruals: Automatically generate accounts payable journals and reverse freight accruals to accelerate month-end close.
- End-to-End Visibility: Track freight spend drivers—including DIM weight impacts—within D365 F&SCM using real-time dashboards and reports.
- Support for Complex Scenarios: Handle inbound, outbound, transfer orders, and consolidated shipments with configurable matching rules.
Preparing for the Change: A Quick Checklist
To minimize the impact of these dimensional weight rounding changes, here are five steps your team can take today:
- Audit Your Packaging
- Run a Cost Simulation
- Update Your ERP Rules
- Automate Invoice Matching
- Educate Your Team
Take Control of Your Freight Spend Today
Carrier pricing changes like UPS’s dimensional weight rounding update are becoming more frequent — and more costly. Businesses that rely on manual processes risk falling behind.
Avantiico’s Freight Invoice Automation solution empowers your team to:
– Audit freight bills efficiently
– Dispute inaccurate charges
– Manage shipping costs proactively
Don’t let rounding rules eat into your margins. Take control of your freight spend with automation that scales with your business.
Learn more: https://avantiico.com/freight-invoice-automation
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FAQs
What is UPS’s new dimensional weight policy?
Starting August 18, 2025, UPS will round up all fractional package dimensions to the next whole inch before calculating dimensional weight.
How does this affect shipping costs?
Even small increases in package dimensions can result in higher billed weights, leading to significant cost increases for high-volume shippers.
How can businesses respond?
Automating freight invoice audits and optimizing packaging are key strategies to mitigate the impact.
