Annuity regular can be identified as
at end of year /quarterly/half year as we pay .
for ex:paying rent. in this we initially pay certain money but it has been paid for every month.
annuity due means which has to be paid immediately.
for ex: insurance
and piggy bag.

Annuity Types:
An annuity is a series of equal cash flows occurring at regular intervals. There are two types of annuities: regular annuity and annuity due.

Regular Annuity:
In a regular annuity, the cash flows occur at the end of each period. For example, if you receive $1,000 at the end of every year for five years, it is a regular annuity.

Annuity Due:
In an annuity due, the cash flows occur at the beginning of each period. For example, if you receive $1,000 at the beginning of every year for five years, it is an annuity due.

Identifying the Type of Annuity:
To determine whether an annuity is regular or annuity due, you need to identify when the cash flows occur. This can be done by analyzing the given information or the context in which the annuity is described.

1. If the problem explicitly mentions that the cash flows occur at the beginning of each period, it is an annuity due.
2. If the problem explicitly mentions that the cash flows occur at the end of each period, it is a regular annuity.
3. If the problem does not provide any information about the timing of cash flows, it is important to clarify the timing with the provider of the information.

Present Value or Future Value:
Once you have identified the type of annuity, the next step is to determine whether you need to calculate the present value or future value of the annuity.

Present Value:
If you are given the future value of the annuity and you need to find the present value, you are calculating the amount that needs to be invested today to achieve the future cash flows. The present value formula discounts the future cash flows back to the present at a specified interest rate.

Future Value:
If you are given the present value of the annuity and you need to find the future value, you are calculating the total amount that will be accumulated at the end of the annuity period. The future value formula takes into account the compounding of interest over the annuity period.

Conclusion:
To identify the type of annuity, analyze the timing of cash flows. If the cash flows occur at the beginning of each period, it is an annuity due, and if they occur at the end of each period, it is a regular annuity. To determine whether to calculate the present value or future value, consider whether you are given the future value and need to find the present value or vice versa.