Using Google Calendar to Track PTO: What Works and What Breaks

A shared calendar is the single highest-value free thing a small team can do about time off, and it is routinely undersold.

Most scheduling problems are prevented by visibility, not by policy. When someone can see that two colleagues are already away that week, they pick different dates without anyone declining anything.

So the answer to "can we just use Google Calendar?" is genuinely: partly, yes. The useful version of this question is knowing exactly which half it does well.

What a calendar does well

Visibility. Everyone sees who is away, in the tool they already have open.

Planning. Absence appears next to meetings and deadlines, which is where the clash actually happens.

Zero adoption cost. Nobody has to learn anything or log in anywhere new — the most underrated property of any process for a small team.

Out-of-office. Personal calendar entries with out-of-office set will decline meetings automatically, which is a real feature no leave tracker can replicate from outside.

What breaks

Nothing counts. A calendar stores events. It has no concept of an entitlement, so nobody can be told how many days they have left without someone adding up entries by hand.

Edits are silent. Anyone with write access can drag an event, shorten it, or delete it. There is no history, so a disagreement about what was booked cannot be settled from the calendar.

No approval record. An event on a calendar does not say who approved it or when. That distinction is invisible at the time and important later.

Half-days disappear. A half-day is either an all-day event that overstates the absence or a timed event that people miss when scanning.

Holidays are not deducted. An event spanning a public holiday counts as a full week to the eye and should not count as five days against a balance.

Accrual is impossible. There is nowhere for "1.25 days per month, capped at 30" to live.

Setting it up properly

If you are using a calendar — alone or alongside something else — these choices make it considerably more useful.

Create one secondary calendar, owned by the company rather than by a person. A calendar owned by an individual leaves when they do.

Share it read-only with everyone, editable only with whoever approves. This is the closest a calendar gets to an approval control, and it prevents the silent-edit problem for most people.

Use a strict naming convention. Something like Away — Priya (Vacation). Consistency is what makes entries filterable later; free-form titles are not searchable in any useful way.

Use all-day events, never timed ones. Timed events collapse into the hour grid and get missed.

Put company holidays on the same calendar so they are visible next to leave, and so the overlap is obvious.

Ask people to set out-of-office on their own calendar too. The shared calendar informs the team; the personal one stops meetings being scheduled.

The hybrid most teams end up with

The common arrangement — and a sensible one — is a calendar for visibility plus something else for the numbers.

If you run both, the rule that keeps it working is that one of them is authoritative for balances. A calendar and a spreadsheet holding the same information will disagree within a month, and the disagreement always surfaces at the worst moment.

Most teams keep the numbers in a PTO tracking spreadsheet and the visibility on a calendar. That works, at the cost of entering everything twice — which is also the reason it eventually stops working.

When a calendar alone is genuinely enough

• Fewer than about eight people
• Generous or unlimited leave, where the exact balance matters less
• Nobody has ever queried a balance
• One location, one simple rule

That is a real set of circumstances and not a small number of teams. If it describes you, a well-organised shared calendar plus a written policy is a perfectly respectable system, and cheaper than anything else. Write the policy down — the PTO policy generator will produce one.

When it is not

The moment any of these are true, the calendar has stopped being sufficient:

1. Someone asks their balance and nobody can answer confidently.
2. Two people booked the same week and the calendar did not stop it, because a calendar has no opinion.
3. You need to know what carries into next year.
4. A booking is disputed and the event has been edited.
5. You are subject to statutory sick leave accrual, which needs hours-based arithmetic a calendar cannot hold.

When to switch from a spreadsheet covers the same threshold from the spreadsheet side, and five ways to track PTO puts calendars next to the alternatives.

The honest summary: keep the calendar. It is doing the visibility job well and nothing replaces having absence show up next to meetings. Just stop asking it to hold numbers it was never designed to hold.