5 Ways to Track PTO (Compared)

The right way to track PTO depends almost entirely on your team size and how much manual math you're willing to do. A two-person shop can get away with a notebook; a 40-person company drowning in Slack requests cannot. Below are the five most common methods, what each actually costs in time and money, and a head-to-head table so you can pick without guessing.

The five methods at a glance

Now let's break down what each one feels like in practice.

1. Paper (the notebook method)

This is exactly what it sounds like: a manager writes time-off requests in a notebook, a sticky note, or a wall calendar in the break room. It's the default for brand-new businesses with two or three employees.

Where it works: When you have so few people that everyone already knows when everyone else is out. If you're a husband-and-wife shop with one part-timer, a notebook is genuinely fine.

Where it falls apart: Almost immediately past three people. There's no running balance, so when an employee asks "how many days do I have left?" you're flipping pages and doing arithmetic in your head. There's no audit trail if someone disputes a deduction. And the single biggest risk is that the record lives in one physical place. If the notebook gets coffee-stained, lost, or left at home, your entire PTO history is gone.

Worked example: Say an employee earns 10 days a year and has taken a Friday here, two days there, and a long weekend. On paper you're hand-counting 5 or 6 separate entries every time you need a number. Do that for five employees and you've spent half an hour just adding. A free PTO accrual calculator can do that math instantly, which is the first sign you've outgrown paper.

2. Spreadsheet (the most common method)

The spreadsheet is where most small businesses land after the notebook. One tab per employee, or one big grid with names down the side and dates across the top. You type in requests, subtract from a starting balance, and color the cells.

Where it works: Teams of roughly 3 to 15, especially if one organized person owns the file. Spreadsheets are free, flexible, and everyone already knows how to use them. With formulas you can auto-calculate remaining balances, which puts it a real step above paper.

Where it falls apart:

• Concurrent edits. The moment two managers open the file at once, you risk overwriting each other. Shared cloud sheets help, but version conflicts still happen.
• Formula rot. Someone drags a formula one row too far, or pastes a value over a formula, and a balance is silently wrong for months.
• No request workflow. There's no "submit, approve, deny" flow. Requests still come in by email or Slack, and the spreadsheet is just where you record the decision after the fact. That gap is where double-bookings happen.
• Accruals are a nightmare. If you accrue PTO per pay period (say, 0.77 days every two weeks) rather than granting it all in January, the formulas get genuinely complicated, and they have to be updated every period.

Worked example: An employee accrues 1.25 days per month and you're trying to figure out their balance mid-year after three partial-day requests. The spreadsheet formula for that is doable but fragile. To sanity-check how many actual working days a planned vacation will eat, paste the dates into a working days calculator so you're not counting weekends by hand.

3. Shared calendar

Here you use Google Calendar, Outlook, or a tool like a team calendar where everyone adds an all-day "Out - vacation" event, or a manager maintains a single "Team PTO" calendar.

Where it works: Visibility. A calendar answers "who is out next Thursday?" better than any other method on this list. For coverage planning, it's excellent: you can see at a glance that three of your five support reps are off the same week and head off a staffing gap before it happens.

Where it falls apart: A calendar tracks events, not balances. It will happily let someone book their 15th day off when they only had 10. It doesn't know about accruals, carryover caps, or how many sick days versus vacation days someone has used. There's no approval step either, so an entry on the calendar isn't the same as approved time off unless your team treats it that way.

The trap: Because a calendar is so good at visibility and so bad at accounting, teams that adopt it almost always run a calendar plus a spreadsheet. Now you're maintaining two systems and they drift out of sync. Someone updates the spreadsheet but forgets the calendar, or vice versa, and you've doubled the work without solving the core problem.

4. HRIS (full HR platform)

An HRIS (Human Resource Information System) is an all-in-one platform that handles payroll, benefits enrollment, onboarding, performance reviews, document storage, and compliance, with PTO tracking as one module inside it.

Where it works: Companies of roughly 30-plus employees that need the whole HR stack. If you're already running payroll and benefits through the platform, having PTO live in the same place is a genuine win. Balances flow into payroll, accruals are automated, and everything is in one system of record.

Where it falls apart for small teams:

• Cost. HRIS pricing typically starts around 8 to 15 dollars per employee per month, often with a setup or implementation fee on top. For PTO alone, you're paying for a dozen features you won't touch.
• Setup time. Implementing an HRIS can take weeks. You're configuring payroll, importing employee records, and sometimes sitting through onboarding calls. That's a lot of overhead if all you wanted was to track who's on vacation.
• Complexity. The PTO module inside a big platform is often buried under menus designed for full-time HR staff. A first-time manager just wants to approve a request, not navigate a benefits-administration dashboard.

Rule of thumb: If you don't already need payroll and benefits software, buying an HRIS to track PTO is like buying a pickup truck to carry a single grocery bag. Before you commit, it's worth running the numbers on what time off actually costs your business with a PTO cost calculator so you know what problem you're really solving.

5. Dedicated PTO tool

A dedicated tool does one thing: time off. Employees request days, managers approve or deny with one click, and the system automatically calculates accruals, balances, and carryover. Most also show a team calendar view, so you get the visibility of method 3 and the accounting that calendar lacks.

Where it works: This is the sweet spot for teams of about 3 to 200-plus people that don't need a full HRIS. You get:

• Automatic accruals. Set a policy once (10 days a year, accrued monthly, 5 days carryover) and the tool does the math forever.
• A real request workflow. Employees submit, managers get notified, approvals are logged. No more Slack messages getting lost.
• Balances on demand. Every employee sees their own balance without asking. That alone eliminates a surprising number of HR emails.
• A team calendar. Coverage visibility without a separate calendar to maintain.
• An audit trail. Every request and approval is timestamped, which matters if a balance is ever disputed.

Where it falls apart: Honestly, the main downside is adoption. It's one more login, and you have to spend ten minutes setting up your policy. For a true two-person shop, that's more structure than you need. For anyone past three or four people, that setup pays for itself within the first month.

Worked example: A 12-person agency was running a Google Sheet plus a shared calendar. Approvals happened over Slack, balances were always slightly wrong, and two designers once booked the same week off during a deadline. After switching to a dedicated tool, the office manager stopped doing monthly reconciliation entirely, and double-bookings disappeared because the calendar and balances are now the same system. If you want to lock down your rules first, a PTO policy generator will give you a clean policy to plug in.

How to choose

Match the method to your reality, not your ambition:

1. 1 to 3 people, simple needs: Paper or a basic spreadsheet is fine. Don't over-engineer it.
2. 3 to 15 people: A spreadsheet works until it doesn't. The day you have a double-booking or spend an hour reconciling, switch to a dedicated tool.
3. 5 to 25 people who care most about visibility: A shared calendar is tempting, but pair it with real balance tracking or you'll end up maintaining two systems. A dedicated tool gives you both.
4. 30-plus people needing payroll and benefits too: An HRIS makes sense because PTO rides along with everything else.
5. Almost any growing team that just needs time off handled well: A dedicated PTO tool is the lowest-friction, lowest-cost way to get automatic accruals, clean approvals, and a team calendar in one place.

The most common mistake is staying on a spreadsheet long past the point where it's costing real hours, because "it's free." Once you price in the admin time and the occasional scheduling mistake, the free option is usually the most expensive one.

The bottom line

Every method on this list works for some team. Paper and spreadsheets are free and fine when you're tiny. Calendars give you visibility but no accounting. An HRIS is the right call when PTO is one piece of a much bigger HR need. For everyone in between, a dedicated tool removes the manual math and the back-and-forth without the cost or setup of a full platform.

That's exactly what SimplyPTO is built for: automatic accruals, one-click approvals, a shared team calendar, and balances your employees can check themselves, all set up in minutes. If your spreadsheet has started costing you more time than it saves, start a free SimplyPTO account and let the math run itself.