CapEx vs DIO

CapEx (Capital Expenditure) and DIO (Days Inventory Outstanding) both come up in business conversations and get confused. Here's the plain-English difference, side by side, so you can use each one with confidence.

The key difference: CapEx refers to capital expenditure, while DIO refers to days inventory outstanding — they describe different things even when they show up in the same sentence.

CapEx — Capital Expenditure

Money spent acquiring or upgrading long-lived assets — buildings, equipment, software platforms. CapEx hits the balance sheet first and the P&L slowly through depreciation.

Full CapEx definition →

DIO — Days Inventory Outstanding

Average number of days inventory sits before being sold. Lower DIO means tighter working capital and less risk of obsolescence.

Full DIO definition →

When to use CapEx

Reach for "CapEx" when the conversation is specifically about capital expenditure. Money spent acquiring or upgrading long-lived assets — buildings, equipment, software platforms. CapEx hits the balance sheet first and the P&L slowly through depreciation.

When to use DIO

Reach for "DIO" when the conversation is specifically about days inventory outstanding. Average number of days inventory sits before being sold. Lower DIO means tighter working capital and less risk of obsolescence.

FAQs

What is the difference between CapEx and DIO?

CapEx stands for Capital Expenditure — Money spent acquiring or upgrading long-lived assets — buildings, equipment, software platforms. CapEx hits the balance sheet first and the P&L slowly through depreciation. DIO stands for Days Inventory Outstanding — Average number of days inventory sits before being sold. Lower DIO means tighter working capital and less risk of obsolescence.

Are CapEx and DIO the same thing?

No. They're often used in the same conversation because they're related, but they describe different concepts. CapEx = Capital Expenditure. DIO = Days Inventory Outstanding.

When should I use CapEx vs DIO?

Use CapEx when you're specifically referring to capital expenditure. Use DIO when the topic is days inventory outstanding.