What does it mean for me and why is it useful?
If you spend less than your daily budget on average you accumulate a surplus. On the other hand, if you spend more than your daily budget on average you accumulate a deficit. This metric helps you see whether you accumulated some extra budget throughout your trip or how much your daily spending exceeded the original budget.
How is it calculated?
Your total trip budget multiplied by the number of days you've been on your trip so far divided by the total amount of days of your trip minus the sum of all the expenses up to today.
Your total trip length:
Your total budget:
Number of days you've been on your trip so far:
All the expenses up to today:
€1000 x 6 / 10 - €800 = - €200
What happens if you exclude entries from the daily metrics?
By excluding entries from the daily metrics, the surplus will be increased proportionally / the deficit will be reduced proportionally.
Note: Surplus/deficit does get affected by excluding both past and future expenses.