If you allow too much tax to be withheld, you get a refund. You can determine how much is tax is taken out of your pay by the number of allowances you claim on your W-4. The W-4 has a worksheet to help you figure out how many personal allowances to take.
Step 5: Predict your next period. Now that we know how long your period cycle is, we can just use it to count the days to predict your next period. My period cycle is 28 days so if I count 28 days from February 10, that's when my next period should come.
1 Early Transition: There is a decrease in predictability regarding when a woman will get her period because her cycle sare no longer the same length each month. 2  Some women may be able to predict their menstrual cycle for several months, but the length of their usual cycle has changed by several days.