---
url: /cube-functions/atopc.md
description: >-
  Calculates depreciation for an asset using the Australian Tax Office (ATO)
  Prime Cost method.
---

# ATO\_PC 

Calculates depreciation for an asset using the Australian Tax Office (ATO) Prime Cost method.

```js
ATO_PC(cost, effective_life, days_held, days_in_year)
```

#### Parameters

* `cost` - The cost of the asset (excluding GST if you're entitled to claim it).
* `effective_life` - The effective life of the asset in years.
* `days_held` - The number of days the asset was held during the income year.
* `days_in_year` - The number of days in the income year, typically 365 or 366.

#### Examples

```js
ATO_PC(80000, 5, 365, 365)

```

**Result:** `16000.0`

**Note:** Calculates depreciation using the Prime Cost method: $80,000 × (365 / 365) × (1 / 5) = $16,000.

```js
ATO_PC(80000, 5, 182, 365)

```

**Result:** `7978.0821`

**Note:** Calculates half-year depreciation for an asset held 182 days out of 365 using the Prime Cost method.