---
title: Using Decimal Values in Years-of-Service Tiers
description: "Built’s PTO module automates tenure-based accrual rate increases, allowing automatic increases in time off earned based on tenure. Companies typically increase accrual amounts annually, but Built supports other frequencies by allowing decimal values for \"years\" in years of service tiers."
---
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1. [Knowledge Base](https://go.builtapp.com/?hsLang=en)
2. [PTO](https://go.builtapp.com/pto?hsLang=en)
3. [Years of Service](https://go.builtapp.com/pto?hsLang=en#years-of-service)
# Using Decimal Values in Years-of-Service Tiers
## For customers of our PTO module.
Automating Tenure-Based Accrual Rate Increases
Built has powerful accrual automation features, including the ability to automatically increase the amount of time off a person earns based on their tenure. The longer someone works for you, the more they can earn, and the system will [automatically adjust PTO amounts for years of service](https://support.builtapp.com/v1/docs/automatically-adjusting-pto-amounts-for-years-of-service).
In most cases, companies increase accrual amounts on an annual basis. For example, an individual earns 80 hours per year until they reach their third anniversary, at which time they begin earning 120 hours per year.
Occasionally, though, we encounter a customer who increases accrual amounts on a frequency other than even yearly numbers. For example, a person earns at a rate of 40 hours per year until they've worked for 18 months, at which time they begin earning at a rate of 80 hours per year.
### Defining Years-of-Service Using Decimal Values
To support various accrual increase frequencies, Built allows decimal values when defining the "years" value of a years-of-service tier. Implementing the previous example would mean entering a value of 1.5 years (18 months) as the point at which an individual's accrual rate should increase.
To determine a person's tenure most accurately, the system uses the current date to calculate what fraction the day is of the total year. A person who has worked 1.5 years will have reached the halfway point from their last anniversary to their next anniversary. Once the individual reaches that halfway point, they would then be eligible for the next years-of-service tier.
*Because months have varying numbers of days, the exact day at which a person reaches 1.5 years in Built may not always correspond to 18 actual calendar months.*
Please contact our Customer Success Team for additional assistance.
Additional Resources
[Automatically Adjusting PTO Amounts for Years of Service](https://support.builtapp.com/v1/docs/automatically-adjusting-pto-amounts-for-years-of-service)
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