How Is Consolidated Shipping Cost Calculated? Formula, Rates & 10 Money-Saving Tips
3 Core Shipping Cost Formulas
Consolidated shipping cost depends on the service. Sea-express is billed per unit: the number of units is whichever is larger between actual weight and volumetric weight, where volumetric weight (kg) = length × width × height (cm) ÷ 10,000. Air freight counts actual weight only and is billed per kg. Large sea-freight cargo instead uses cai units (÷28,316) and is quoted by customer service.
📅 Last updated: 2026-10-29 · ✍️ HowBridge Consolidated Shipping Editorial Team · 🛡️ Compiled from Customs announcements and current regulations
① Volumetric Weight (Most Important)
Example: for a 50×40×30cm box, volumetric weight = 60,000 ÷ 10,000 = 6 kg. HowBridge uses ÷10,000 for sea-express (air freight counts actual weight only, with no volumetric weight); large sea-freight items are instead calculated in cai units: length × width × height (cm) ÷ 28,316.
② Chargeable Weight
Sea-express bills whichever is larger between actual and volumetric weight — this is why sea-express costs for light-but-bulky items (large volume, low weight) are so often underestimated. Air freight counts actual weight only, not volume.
③ Total Shipping Cost
Sea-express NT$50/unit, air freight NT$100/kg, sea LCL consolidation from NT$25/kg or NT$150/cu ft, minimum NT$3,500 per shipment (quote-based); for shipments under 10 kg, sea-express adds NT$100 and air freight adds NT$120 in delivery fees — waived once you reach 10 kg.
The larger the volumetric divisor, the lower the calculated volumetric weight — and the better it is for you. When comparing consolidators, check the divisor along with the per-kg rate, not the rate alone.
Rate Comparison for 4 Shipping Services
HowBridge offers four shipping services, and all rates are published on the rate page. If you see different per-kg prices, check which service they refer to first — it's not a case of old vs. new pricing.
| Service | Rate | Transit Time | Pricing Method |
|---|---|---|---|
| Air Express | NT$100/kg | 3–5 days | Actual weight only (no volumetric weight), rounded up to the next kg |
| Sea-Express (Sea Freight Express) | NT$50/unit | 5–10 days | Larger of actual weight and volumetric weight (÷10,000) |
| Commercial Sea-Express | Project quote (bulk shipments) | 5–10 days | For seller bulk shipments with invoicing; contact us for custom terms |
| Sea LCL Consolidation (Bulk Cargo) | From NT$25/kg or NT$150/cu ft | 7–14 days | Priced by CBM / cai (÷28,316); quoted by customer service based on your items |
- Delivery fee under 10 kg: sea-express adds NT$100, air freight adds NT$120; waived once you reach 10 kg.
- Same price for regular and special cargo: sensitive items like lithium batteries and cosmetics are not charged extra.
- No minimum spend for sea express and air: small packages never lose their rate advantage to a minimum-order fee. Sea LCL consolidation has a minimum charge of NT$3,500 per shipment.
The actual shipping cost is determined by the system calculation at the time of shipment; before ordering, you can estimate the total with the shipping cost calculator.
Shipping Cost Calculation Examples
Two typical scenarios, worked through with the formulas and rates above (sea express uses the larger of actual and volumetric weight with the ÷10,000 divisor; air freight counts actual weight only, rounded up to the next kg).
Example A: Light but Bulky (Storage Boxes, Puffy Clothing)
- Package size: 50×40×30cm
- Actual weight: 1.5 kg
- Volumetric weight = 60,000 ÷ 10,000 = 6 kg
- Sea-express chargeable weight = MAX(1.5, 6) = 6 units (billed by volume); air freight counts actual weight only: 1.5 kg rounded up to 2 kg
Air freight cost = 2 kg × NT$100 + delivery fee NT$120 = NT$320
Air freight counts actual weight only, so for this light-but-bulky box air freight (NT$320) is about 20% cheaper than sea-express (NT$400) and faster (3–5 days); items containing lithium batteries, liquids or cosmetics cannot go by air and must use sea-express.
Example B: Heavy but Compact (Supplements, Metal Parts)
- Package size: 20×15×15cm
- Actual weight: 4 kg
- Volumetric weight = 4,500 ÷ 10,000 = 0.45 kg
- Sea-express billing = MAX(4, 0.45) = 4 units (billed by actual weight); air freight counts actual weight only: 4 kg
Air freight cost = 4 kg × NT$100 + delivery fee NT$120 = NT$520
Heavy, compact items are billed by actual weight, so the volumetric formula barely matters — choosing sea-express or air freight comes down to how fast you need it.
For bulk items over 10 kg, furniture, and appliances, use sea LCL consolidation instead: from NT$25/kg or NT$150/cu ft, billed by CBM / cai, quoted by customer service based on your items — this page does not calculate a total cost for those.
Air, Sea-Express, or Sea Freight — Which Should You Choose?
For most packages, sea-express is the best value; for light, small items you need quickly, choose air freight; for bulk items over 10 kg, furniture, and appliances, use the sea freight line.
- Urgent, light, small items: Air express is fastest at 3–5 days, NT$100/kg.
- Standard packages (most common): Sea-express takes 5–10 days at NT$50/unit — the balance point between price and speed.
- Bulk cargo, furniture, appliances: Sea LCL consolidation from NT$25/kg or NT$150/cu ft, 7–14 days, billed by CBM / cai and quoted by customer service.
- Lithium batteries, liquids, and cosmetics: Cannot go by air — use sea-express or sea freight instead; HowBridge charges the same price for regular and special cargo, so these sensitive items are not marked up.
Oversized item note: for a single item over 10 cai or 40 kg, Taiwan-side home delivery carries an additional oversize fee (tiered by county/city and cai / weight) — confirm with customer service before ordering. The Taiwan-leg oversize surcharge applies only to sea express and air freight parcels; quotes for sea LCL cargo already include it.
Consolidation Rules & Free Services
"Consolidation" is the biggest money-saving lever in shipping — multiple orders arrive at the warehouse over time, get packed together, and are billed once based on the combined weight/volume.
- Multiple items become one package, so the delivery fee is charged only once; once the combined weight reaches 10 kg, it is waived entirely.
- With just one combined package, shipping and customs-clearance risk is lower than sending multiple separate parcels.
- EZWay real-name verification only needs to be done once, not once per package.
- 366 days of free storage: wait until all your items arrive before consolidating — no need to rush a shipment just to save on storage fees.
- Consolidation and packing: Free.
- 366 days of storage: Free — wait for multiple orders to arrive before shipping, at no extra cost.
- Photos and item count on arrival: you can request photos (from NT$20) and an item count (NT$5 per item) and look at the photos before deciding to forward; photos and counting are not an inspection or authentication.
- Liquids (cosmetics, cleaning products) and food are best packed in separate boxes to avoid leaks and contamination.
- Glass, ceramics and other fragile items are not accepted; items shipped without disclosure are not eligible for compensation.
- For BSMI-regulated items (plug-in electronics and appliances), add a note so it matches your customs paperwork.
10 Practical Money-Saving Tips
Every tip below builds directly on the formulas and rates above — you can put them into practice right away.
Wait and Consolidate Before Shipping
Let packages you order over time sit in the warehouse (366 days free storage), then consolidate them all at once: the delivery fee is charged only once, it is waived entirely once the combined weight hits 10 kg, and you only need to complete EZWay real-name verification once.
💰 Zero delivery fee + single deliveryCompare Air Freight and Sea-Express for Light-but-Bulky Items
Sea-express charges the larger of actual and volumetric weight, while air freight counts actual weight only. For the same storage box in Example A (1.5 kg actual, 6 kg volumetric): air freight NT$320 vs. sea-express NT$400; items containing lithium batteries, liquids or cosmetics cannot go by air and must use sea-express.
💰 Saves about 20%Ask the Seller to Ship Furniture Flat-Packed
Shipping cost is based on volume, and pre-assembled furniture mostly ships air. Ask the seller to send it flat-packed (knock-down panels) instead — the volume drops sharply, and so does the cost.
💰 Savings scale directly with the volume reductionBuy During Mainland China's Big Sales
Discounts are deepest during 618, 11.11, and 12.12. Combine them with 366 days of free storage to build up your order gradually, then consolidate into one shipment — saving on both the product price and the shipping cost.
💰 Product discounts + shipping cost spread across a consolidated shipmentPlan for Sea-Express / Sea Freight from the Start for Lithium Batteries and Liquids
Items containing lithium batteries cannot be shipped by air under aviation dangerous-goods rules, and liquids and cosmetics face restrictions too. Plan for sea-express or sea freight from the outset to avoid having to change your order midway. HowBridge charges the same price for regular and special cargo, so sensitive items are not marked up.
💰 Zero markup on sensitive itemsUnderstand the NT$2,000 Duty-Free Threshold — Do Not Try to "Split Orders"
A dutiable value under NT$2,000 is exempt from customs duty and business tax — but this is a "threshold," not an "allowance": go over it, and the entire amount is taxed, not just the portion above NT$2,000. And if you import more than 6 times within six months, customs may deny the exemption altogether. Deliberately splitting an order into smaller shipments to dodge this can backfire — customs can combine them and tax the total, which is not worth the risk.
💰 Avoids back taxes and penaltiesMeasure the Volume Before You Order
Light-but-bulky items are the easiest to underestimate: storage boxes, puffy jackets, strollers, long slim sports gear. Plug the package dimensions into the volumetric formula before ordering, and your shipping budget stays accurate.
💰 Keeps your budget accurateReach 10 kg to Waive the Delivery Fee
At 9 kg, sea-express costs NT$450 + NT$100 delivery fee = NT$550; but reaching 10 kg actually costs only NT$500. When you are just short of the threshold, adding one more small item saves you money.
💰 Saves NT$100–120 in delivery feesNo Fragile Items, and Film Yourself Unboxing
HowBridge declared-value compensation standard: for now, loss or damage is compensated up to three times that parcel’s shipping fee; optional declared-value protection (3% of the declared value, max NT$150; once available, compensation at the declared value up to NT$5,000) is coming soon; fragile items such as glass and ceramics are not accepted for shipping, and items shipped without disclosure are not eligible for compensation (fragile items, liquids, powders, batteries and battery-powered items, dangerous goods and prohibited items are not compensated with or without declared-value protection); the amount for damage is assessed case by case. (The above compensation does not apply to precious metals and jewelry: they must first be insured by an insurance company, and HowBridge bears no liability for their loss or damage in transit; see the Terms of Service.) Prevention beforehand matters more than claims after the fact: do not ship glass, ceramics or other fragile items, and film yourself unboxing the package the moment it arrives.
💰 Risk management — avoids major lossesUse the Official Calculator to Work Out the "True Landed Cost"
Do not compare prices by per-kg rate alone: use the shipping cost calculator together with the tax calculator covering 12,000+ CCC tariff codes to work out "shipping cost + delivery fee + tax" all at once — that is your true total cost.
💰 Helps you avoid costly mistakesFrequently Asked Questions About Consolidated Shipping Cost
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