The formula to calculate the Lease Expiration Date (E) is:
\[ \text{E} = \text{S} + \text{T} \]
Where:
Let's say the lease start date (S) is 2024-01-01 and the lease term (T) is 12 months. Using the formula:
\[ \text{E} = \text{2024-01-01} + 12 \text{ months} = \text{2025-01-01} \]
So, the lease expiration date is 2025-01-01.