Outstanding Subscriptions are............for a not-for -profit organization.

Asset

The correct answer is option 1- Asset.

Subscription is an annual payment by the members of the organisation. If any member does not pay subscription in the current year then it is outstanding subscription.

Subscription is an income for the organisation, so outstanding subscription is added on the credit side of income and expenditure account to the current year subscription received amount.  If income is outstanding it will be an asset, and it will be shown on the assets side of the balance sheet.