PTO Carryover Rules Explained

At the end of a leave year most people have days left. Carryover is the rule deciding what happens to them: whether they move into the new year, how many of them move, and how long they survive once they get there.

It is a small rule with a long tail. It sets how much unused time the company is carrying, whether January fills up with people burning days before a deadline, and whether anybody's balance can be trusted after a few years. It is also the single most common place for a leave spreadsheet to produce a number nobody can reproduce.

The strictest rule is that nothing carries. The leave year ends, unused days go, and everybody starts level. It is simple, it caps the liability at exactly one year, and it pushes people to take their leave, which is the reason the leave exists.

It also produces a year end rush, and it is unforgiving when somebody could not take leave for reasons that were not theirs: a project that overran, a long illness, a period of parental leave. Most companies running use it or lose it keep a documented exception process for exactly those cases, which is better than an undocumented one operated by whoever asks loudest.

The middle position, and the most common one. Unused days carry forward up to a limit and anything above it is lost. A cap of five days on a 20 day allowance lets somebody shift a holiday across a year boundary without letting anybody bank a sabbatical by accident.

Set the cap against a real situation rather than a round number. The useful question is what a carried balance should be able to buy: moving a two week holiday into January, or keeping a few spare days for the school holidays. The answer usually points somewhere near a week.

A cap is applied once at each year boundary, to the unused balance standing at that boundary. It is not applied once to a running total, and the difference compounds every year it is wrong.

Year two is where the cap bites. Ten days were unused and five of them were lost. Year three opens with those five carried days, and because 22 days were taken out of the 25 available, three days carry out. Three is the correct answer.

Now do it the way a spreadsheet usually does, by carrying the full unused figure forward and applying the cap only at the end. Year two carries ten. Year three opens with 30 available, 22 taken leaves eight, and the balance the employee sees is eight rather than three. The policy said five days maximum, and the sheet has quietly granted more than that in every year since the first mistake.

The other direction is just as wrong. Applying the cap again to a total that has already been capped strips days somebody genuinely earned. The only reliable approach is to walk forward year by year from the hire date, applying the rule once at each boundary, which is what the tracker on this site does every time it renders a balance rather than storing a figure that goes stale the moment an old booking is corrected. See it on your own numbers.

A softer alternative to a cap. Carried days move forward in full but have to be used by a date, commonly the end of the first quarter, after which they lapse. Some policies apply an expiry and a cap together.

Expiry keeps the liability short lived without forfeiting anything at midnight on the last day of the year. It costs something in tracking, because a balance now holds two kinds of day: carried days with a deadline and new days without one. Deduct the expiring days first, or the deadline achieves nothing at all.

Some companies buy back unused days at the year end rather than carrying them. It clears the liability in cash and gives employees a choice, and it needs a limit, because paid time off that is routinely converted into money is not time off, and the rest it was meant to provide never happens.

Where a payout is optional, cap the number of days that can be sold and keep a minimum that has to be taken as actual leave.

Carryover is one of the areas where local law overrides whatever you write. Rules on forfeiture, on payout at termination, and on statutory minimum leave that cannot be waived vary by country, and in the United States they vary by state. Some jurisdictions require unused time to be paid out, some permit forfeiture with notice, and some regulate only particular categories such as paid sick time.

Nothing on this page is legal advice, and no leave tracker can be. Confirm the position for every jurisdiction you employ people in before adopting a cap or a forfeiture rule, and note when you last checked, because these rules change.

A carryover rule living in a manager's head produces a different answer for every person who asks. Four sentences will do: whether unused days carry, how many, whether they expire, and who to ask for an exception. The policy guide has the rest of the structure, and if all of this currently lives in cells, the spreadsheet guide covers what breaks first.