--- title: "Delivery Terms Glossary: Estimated Delivery Date vs Delivery Date vs Ship Date vs Lead Time" description: "Every store uses these words slightly differently, which is why shoppers ask what they mean. Plain definitions of estimated delivery date, ship date, lead time, transit time, delivery window and cutoff — plus how they fit together." contentType: "blog" locale: "en" localized: true source: "https://orderrules.com/blog/delivery-terms-glossary" slug: "delivery-terms-glossary" date: "2026-08-28" tags: - "shopify" - "estimated delivery date" - "delivery date" - "glossary" - "shipping" - "lead time" - "delivery" --- Shoppers ask what these words mean because stores and carriers use them inconsistently. One store's "estimated delivery" is another's "expected arrival", and a third shows a ship date without labelling it as one. Here is what each term actually refers to, and how they fit together. ## Quick answer: the terms at a glance | Term | What it means | Whose job it describes | |---|---|---| | **Ship date** | The day the parcel leaves the seller | The seller's | | **Estimated delivery date** | The day it should reach the buyer | Both | | **Lead time** | Time to pick, make and pack before handover | The seller's | | **Transit time** | Time the carrier takes to deliver | The carrier's | | **Delivery window** | The range shown, e.g. 10-11 July | Both | | **Cutoff time** | The hour after which orders roll to the next day | The seller's | The two that get confused are the ship date and the estimated delivery date, and the distance between them is transit time. ## How an estimated delivery date is calculated ``` Order placed Monday 13:00 Cutoff 14:00 ← made it, so lead time starts today Lead time 1 business day Ship date Tuesday ← the parcel leaves the seller Transit time 1-3 days Estimated delivery Wed - Fri ← the window the shopper sees ``` Two details do most of the damage when they're wrong. **Business days**, not calendar days — a Friday order with two days of transit does not arrive Sunday. And **holidays**, which is why the same rule produces bad estimates during national holiday periods unless the calculation knows about them. ## Ship date vs delivery date This is the distinction worth getting right, because it causes real support load. A **ship date** is a fact about the seller's operation. It says nothing about how long the carrier will then take. It belongs in an order confirmation email, where "we're shipping it Tuesday" is genuinely the useful information. An **estimated delivery date** is what the shopper is actually asking about, and it belongs on the product page and in the cart. Show a ship date where a shopper expects an arrival date and you will get "where is my order?" messages about parcels that are running exactly on time. ## Lead time vs transit time Both are durations, and they belong to different parties: - **Lead time** is yours. A made-to-order cake might have three days; a stocked item might have four hours. You control it. - **Transit time** is the carrier's. You can pick a faster service, but you don't control the number. Stores that quote only one of the two are usually the ones with inaccurate estimates. Bakeries under-quote by forgetting transit; drop-shippers under-quote by forgetting lead time. ## Delivery window and time slots A **delivery window** is the range you publish — either a date range like 10-11 July, or a same-day time slot like 14:00-16:00. Windows exist because transit time is variable. Publishing a range is not vagueness, it is accuracy: a two-day window you hit is worth more than a single date you miss. For perishables, gifts and anything needing someone home, a window isn't enough — those need a [delivery date the customer chooses](/blog/add-delivery-date-picker-shopify) rather than one you estimate. ## Cutoff times A **cutoff** is why two orders placed on the same day can show different estimates. Order at 13:00 with a 14:00 cutoff and your lead time starts today; order at 14:05 and it starts tomorrow. Publishing the cutoff on the product page — "order within 2 hours for dispatch today" — converts, because it turns an abstract estimate into a decision the shopper can act on now. ## Terms that mean the same thing These are all the same concept with different labels: **expected delivery date**, **approximate delivery date**, **est. delivery**, **delivery estimate**, **estimated arrival**. No store means anything different by them. Two that are *not* synonyms and get mistaken for one: - **Guaranteed delivery** — a paid carrier service with a refund attached. A standard estimate is not this. - **Unattended delivery** — how a parcel is left rather than when it arrives. In Japan this is [okihai / 置き配](/blog/shopify-unattended-delivery-okihai). Japanese uses four separate words where English uses roughly two, and they are not interchangeable — see [Japanese delivery date terms](/blog/japan-delivery-date-terms). ## Showing this on a Shopify store Shopify does not calculate or display an estimated delivery date on product pages by default. To show one you need lead time, transit time, business-day counting and a holiday calendar working together. OrderRules displays a holiday-aware estimate on product and cart pages, and — where an estimate isn't enough — lets customers pick a delivery date and time slot at checkout. Delivery features are on the [Advanced plan](/pricing), with a 14-day free trial. ## Related reading - [What "estimated delivery date" means, in depth](/blog/what-is-estimated-delivery-date) - [Japanese delivery date terms](/blog/japan-delivery-date-terms) — 発送予定日, 配送予定日, お届け予定日, 着荷予定日 - [Estimated delivery dates and Japanese holidays](/blog/estimated-delivery-date-japanese-holidays) - [Setting up cutoff times on Shopify](/blog/setting-up-cutoff-times-shopify)