How to Calculate PTO Accrual

How much paid time off or vacation time am I entitled to?

In the USA, there’s no federal requirement to grant employees paid time off including any of the 11 federal holidays.

This means that the exact amount of PTO you’re entitled to can vary from workplace to workplace. Every company may calculate PTO accrual differently.

However, the state or county you’re in may have laws that entitle you to a certain amount of sick leave.

For example, since January 1, 2024, Californian employers must provide and allow employees to use at least 40 hours or five days of paid sick leave per year. There are also extra requirements for paid time off provisions if you’re a contractor working with the federal government.

Ultimately, this means that there are 3 key places you’ll need to look to understand how much vacation and PTO time you’re personally entitled to:

1. State and County Legislation (for the bare minimum PTO you’re entitled to)
2. Your employer’s PTO & Vacation policy (for understanding how your PTO is accrued, when you’re entitled to it and how to apply for it)
3. Your own employment contract (for specific additional vacation entitlements you’re entitled to)

How is Paid Time Off accrued and allocated?

The 3 most common PTO systems in the US used to calculate PTO accrual and tracking are:

1. Traditional PTO Policies, which allocate a number of days off for specific purposes, such as:
   • Vacation
   • Sick Leave
   • Bereavement Leave
   • Jury Duty

   The exact number of days allocated for each will varies between workplaces, but is often accrued gradually over time or (less commonly) provided to employees as a lump sum on a set date each year.

   While this is the most common form of PTO policy, it is declining in use due to the amount of tracking and administration required to keep track of all the different types of PTO that each employee claims.

   You may need to justify your time off with documentation (for example, from a medical professional) to claim paid time off if your organization uses a more traditional PTO policy to calculate vacation accrual.

2. PTO Bank/PTO Plan Policies, which typically lump all PTO into one pool which you can use for any purpose you choose.

   This PTO can also be accrued gradually over time or provided in a lump sum and is relatively easy to manage as you usually don’t need to prove why you need to take the time off as it’s no longer relevant to your employer.

   However, it can lead to problems if you choose to use all of your PTO for a vacation and then fall sick for example, so most employees with a PTO Bank or Plan are encouraged to keep a few days spare wherever possible.

3. Unlimited PTO Policies, which are far less common but growing rapidly in use among more progressive organizations, allow employees to take as much time off as they need so long as they are still able to perform their tasks adequately.

   While you may expect that employees would go on vacation endlessly given this freedom, in practice, workplaces with unlimited PTO policies tend to take fewer vacation days than similar workplaces with more traditional PTO policies (and of course there is no need to calculate vacation accrual, which can save some administration and tracking time).

   This reduction in vacation days taken is possibly due to perceived judgment from managers and coworkers (“everyone will think I’m lazy if I go on vacation”) or due to the fact that most organizations that currently employ such policies expect a high enough level of output from their employees that they do not feel time off is feasible (“I can’t go on vacation - I have too much work to do!”).

How do I work out how much PTO I’ve accrued?

If you receive your time off as a lump sum on a set date, it’s simple to work out how much PTO you’ve accrued - you gain the specified amount on the specified date (generally, a set date or the anniversary of your first day).

If, however, your PTO is accrued gradually over time, it’s most likely going to be accumulated and measured in hours or days, so:

1. A normal working week is 5 days (assuming you’re contracted to work 8 hours per day, that’s 40 working hours).
2. If you receive 2 weeks PTO each year, this equates to 10 days (5 days × 2 weeks)
3. Every calendar day you accumulate about 0.2192 hours of PTO (10 days x 8 hours / 365 days)

So in this scenario, you’d accumulate less than 15 minutes of PTO each day. Let’s call this the accumulation rate.

Two formulas give us your PTO entitlement in hours and days.

Hours accumulated = Calendar days employed × Accumulation rate

Days accumulated = Calendar days employed × Accumulation rate / The Number of Hours in Your Standard Working Day

Let’s say you’ve worked hard for 10 months and need some time off. We’re also going to assume that your normal working day is considered to be 8 hours. All you have to do is plug in the numbers.

10 months is around 304 calendar days (yes, we counted)

304 days × 0.2192 = 66.6 hours accumulated

304 days × 0.2192 / 8 = 8.3 days accumulated

If you work part-time, you need to adjust the accumulation rate like this.

0.2192 × Average days worked per week / 5

For example, if you work 3 days per week your accumulation rate is calculated as follows.

0.2192 × 3 / 5 = 0.13

If your PTO is earned for each hour you work, use this formula instead. 2,080 is the number of hours in a full-time year (40 hours × 52 weeks).

Hours accumulated = Hours worked × Annual PTO hours / 2,080

For example, if you get 80 hours of PTO a year and have worked 1,000 hours, you’ve accumulated 1,000 × 80 / 2,080 = 38.5 hours.

Some accrual rates are set per hour worked instead. For example, California paid sick leave accrues at a rate of at least one hour for every 30 hours worked, so 1,000 hours of work earns at least 1,000 / 30 = 33.3 hours.

Other Things to Keep in Mind

• PTO will often have an expiry, meaning that if you don’t use your PTO within a certain amount of time after receiving your entitlement, you may lose it. Some states don’t allow this, including California, Colorado and Montana.

• Alternatively, your employer may set a maximum amount of PTO you can accrue, which has a similar effect but is tracked slightly differently.

• Your employer may also have specific rules on how much time off you can take and when you can take it.

Specific PTO Tips for your industry

All types of businesses face unique challenges when managing PTO, so here’s some more specific tips:

• Managing Dental Clinic PTO
• Vacation & PTO Tracking for Technology Companies & Startups
• Vacation Tracking Strategies for Law Firms

Track Your PTO Automatically in Bindle

Now you’ve got the hang of the formulas, you might be tempted to fire up Excel and create a PTO spreadsheet. Hold that thought…

We created Bindle to solve all the problems you hit when you try to manage Paid Time Off and Vacation days using email and spreadsheets.

Bindle gives staff and managers direct access to request, view and manage their paid time-off. It’ll even sync up with your existing team calendars.