Start dates and deadlines

A task can carry two dates. The start date — labelled When in the app — decides which day it appears in Today. The deadline is when it is actually due; it schedules nothing and has its own view. Most tasks need only the first, and both fields are optional.

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Setting a date

  1. Open the task and choose When to set the start date. This is the one that decides where the task shows up.
  2. Choose Deadline to set the hard cutoff, if there is one. It appears in the Deadlines view and changes nothing about which day the task lands in Today.
  3. Or type the date into the title when you create the task — call the dentist tomorrow, file the return on 30 april — and it is lifted out of the title into the start date.

One naming note, because the words differ on purpose: the app labels the field When, the same word Things 3 uses, while this site says start date because that is what people search for. They are the same field.

What each date actually does

The start date schedules. A task appears in Today on its start date and sits in Upcoming, grouped by day, until then. Before that day it is out of your way — captured and planned, but not in front of you. Dragging it to another day in Upcoming reschedules it, and nothing else moves.

The deadline does not schedule. It is a fact about the world rather than a decision about your week, so it has its own view — a list of what is genuinely due and when — and it never puts a task into Today. A task can have one, the other, both, or neither.

The worked example is a tax return. Deadline: 30 April, because that is fixed. Start date: 12 April, because that is your choice. Move the start date to the 14th and the deadline stays where it was — which is the entire reason for two fields. See deadline vs due date for how to decide which a task wants.

What is free and what is Premium

The start date is free, along with unlimited tasks and the whole repeat engine. The deadline field and the Deadlines view are Premium — $3.99 a month, $34.99 a year, or $59.99 once. Worth knowing that this is the normal shape of the market rather than an outlier: Todoist gates its Deadlines behind Pro too.

Things that surprise people

  • A typed time becomes a reminder, not a scheduled time. “Tomorrow at 9” sets the date to tomorrow, takes “at 9” out of the title, and sets a 09:00 reminder on the task. Neither date field stores a time, so nothing in Today or Upcoming moves to 9 o’clock.
  • Giving a task in the Inbox a date moves it to Someday. This is automatic and the app does not explain it, so a task can appear to vanish from the Inbox. It is in Someday, with the date you set.
  • A deadline cannot carry a reminder. Reminders attach to the start date only, so nothing fires when a deadline arrives — the Deadlines view is something you look at. To be nudged before a cutoff, set a start date a few days earlier and put the reminder there.
  • The deadline field is Premium, not just the Deadlines view. On the free plan the field itself will not save, which is a clearer thing to know up front than to discover mid-edit.
  • There is no calendar sync. If you want deadlines to sit alongside meetings, TaskPocket does not do that.

Questions people ask

What is the difference between When and a start date?

Nothing — they are the same field. The app labels it When, which is the shorter word and the one Things 3 uses; this site calls it a start date because that is the phrase people search for. Both mean the day the task appears in Today.

Why did my task disappear from the Inbox?

Giving an Inbox task a date moves it to Someday automatically. Nothing in the app explains that, which is a fair complaint. Look in Someday and it will be there with the date you set.

Can I set a time as well as a date?

You can set a reminder time, which is not the same as scheduling the task for that time. Both date fields still hold a date only. Add a time on the When picker, or type one — “tomorrow at 9” — and you get a notification at 09:00 in your browser and on your iPhone. A deadline cannot carry one.

Is the deadline field free?

No, it is part of Premium, along with the Deadlines view. The start date is free. Todoist also charges for its deadlines, under Pro, so both products paywall the second date.

Sources

  1. Todoist — Introduction to deadlines (how another app separates the two dates, and its plan gating)checked 2026-09-01
  2. Cultured Code — Things 3 uses “When” for the same fieldchecked 2026-09-01