Definition
MTD is short for “month to date.” It refers to the period starting from the current month's beginning till the most recent date. It does not factor in today’s date as it may not be complete yet. MTD is used in financial context to give information on a certain business activity for a certain time period.
Example
Suppose, if today's date is 20th December, MTD would refer to business activities or financial data during the period of 1st December – 19th December.
Why it matters
MTD can be used while recording and presenting financial performance of a business during a certain time period. It can help in identifying trends and predicting future patterns. Businesses mostly use this concept to compare their current performance against past periods.