| Surcharge | Typical size (2026) |
|---|---|
| Fuel surcharge | ~15–19% of the base rate, updated monthly |
| Residential delivery | $5–6 per package (ground) |
| Additional handling (long/heavy/odd) | $15–30 past carrier limits |
| Oversize (length+girth > 130 in) | $22+ and up by zone |
| Delivery area surcharge (rural ZIPs) | $4–6 |
| Signature required | $5–8 |
| Declared-value insurance | ~$1.30 per $100 over the first $100 |
Dimensional weight at the US domestic divisor of 139, billable-weight rounding, zone-based ground/air base rates, ~17% fuel surcharge, residential and oversize fees. Rates are 2026 retail-level planning estimates blended across major carriers.
Real rates vary by carrier, account discounts, exact ZIP pair, and monthly fuel tables. USPS flat-rate and cubic pricing, carrier-specific promos, and negotiated commercial rates aren't modeled — treat this as the honest retail ballpark, then price-shop the three carriers.
DIM weight = L×W×H ÷ 139 · billable = max(actual, DIM), rounded up
base = (8.50 + 1.05 × billable lb) × zone factor × service factor
total = base + 17% fuel + $5.30 residential + oversize if L+2(W+H) > 130