What Is FedEx One Rate?
FedEx One Rate is a flat-rate shipping option where you pay a single price based on the FedEx packaging type and shipping zone — regardless of weight, up to 50 lbs. There’s no dimensional weight calculation, no weight-based rate lookup — just a flat price per package.
Available Packaging
FedEx One Rate requires you to use FedEx-supplied packaging (provided free of charge):
| Packaging | Interior Dimensions | Best For |
|---|---|---|
| FedEx Envelope | 12.5” × 9.5” | Documents, flat items |
| FedEx Pak | 15.5” × 12” | Soft goods, small items |
| FedEx Small Box | 12.375” × 10.875” × 1.5” | Books, electronics, flat products |
| FedEx Medium Box | 13.25” × 11.5” × 2.375” | Apparel, small products |
| FedEx Large Box | 17.5” × 12.375” × 3” | Larger products, multiple items |
| FedEx Extra Large Box | 11.875” × 11” × 10.75” | Heavy compact items, bottles |
All packaging has a 50 lb weight limit.
Services Available with One Rate
One Rate is available across most FedEx Express services:
| Service | One Rate Available |
|---|---|
| FedEx Express Saver | ✅ |
| FedEx 2Day | ✅ |
| FedEx 2Day A.M. | ✅ |
| Standard Overnight | ✅ |
| Priority Overnight | ✅ |
| First Overnight | ✅ |
| FedEx Ground | ❌ Not available |
Important: One Rate is an Express service — it’s not available for Ground shipments.
Pricing Structure
One Rate prices vary by zone and packaging type:
Approximate 2026 One Rate Pricing (FedEx Express Saver)
| Packaging | Zone 2 | Zone 4 | Zone 6 | Zone 8 |
|---|---|---|---|---|
| Envelope | $10.50 | $11.50 | $13.00 | $15.50 |
| Pak | $13.00 | $14.50 | $16.50 | $19.50 |
| Small Box | $16.50 | $18.50 | $21.00 | $25.00 |
| Medium Box | $19.50 | $22.00 | $25.00 | $30.00 |
| Large Box | $24.00 | $27.00 | $31.00 | $37.00 |
| Extra Large Box | $29.00 | $33.00 | $38.00 | $45.00 |
Fuel surcharges still apply on top of these rates.
When One Rate Saves Money
One Rate excels for heavy items that fit in the available packaging. Since the rate is flat regardless of weight, the heavier your item, the more you save:
Example: 25 lb item in a Large Box, Zone 5 (Express Saver)
| Method | Cost |
|---|---|
| Standard Express Saver (25 lbs) | $45.00 |
| FedEx One Rate (Large Box) | $29.00 |
| Savings | $16.00 (36%) |
Example: 3 lb item in a Large Box, Zone 5 (Express Saver)
| Method | Cost |
|---|---|
| Standard Express Saver (3 lbs) | $22.00 |
| FedEx One Rate (Large Box) | $29.00 |
| One Rate costs MORE | +$7.00 |
Rule of thumb: One Rate typically breaks even at 10–15 lbs for boxes and saves significantly at 20+ lbs.
One Rate vs. UPS Simple Rate
| Feature | FedEx One Rate | UPS Simple Rate |
|---|---|---|
| Services | Express only | Ground + Express |
| Packaging | FedEx-supplied (free) | Your own packaging |
| Max weight | 50 lbs | 50 lbs |
| Zone-based pricing | Yes | Yes |
| DIM weight applied | No | No |
Key difference: UPS Simple Rate works with your own packaging (within size tiers), while FedEx One Rate requires FedEx packaging. UPS Simple Rate also works with Ground service, making it more versatile.
One Rate vs. USPS Flat Rate
| Feature | FedEx One Rate | USPS Flat Rate |
|---|---|---|
| Zone pricing | Yes (varies by zone) | No (truly flat nationally) |
| Weight limit | 50 lbs | 70 lbs |
| Delivery speed | Express (1–3 days) | Priority Mail (1–3 days) |
| Tracking | Full FedEx tracking | Full USPS tracking |
| Cost range | $10.50–$45.00+ | $9.45–$22.45 |
USPS Flat Rate wins on price for most scenarios. FedEx One Rate wins on reliability and tracking quality.
Important Considerations
- Fuel surcharges apply: One Rate is flat for the base rate, but fuel surcharges are still added as a percentage
- Surcharges may apply: Residential delivery, signature, DAS, and other surcharges are applied on top of the One Rate price
- No contract discount: One Rate is a published-rate program — it typically doesn’t benefit from negotiated discounts
- Packaging must be FedEx: Using your own packaging disqualifies the shipment from One Rate
The Bottom Line
FedEx One Rate is a strong option for shipping heavy items via express services in FedEx-supplied packaging. For items over 10–15 lbs, the savings vs. standard express rates can be substantial. But for lightweight items, standard rates (especially with negotiated discounts) are almost always cheaper.
Want to see if One Rate would save on your express shipments? Upload one invoice to ShipMint’s Instant Analysis — free.