Lake-Sumter Community College


We are located in the Business Services office on the Leesburg campus.

Regular Office Hours: Summer Office Hours:
Monday-Friday 8:00am-4:30pm Monday-Thursday 8:00am-5:00pm
*Please see the College calendar for holidays and other important dates*  

For questions, please send an email to



If you are asked for credentials to open any of the above files, use your employee email address (including "") and your network password.

IRS Withholding Calculator

The IRS has released a withholding calculator to help you determine what may be an appropriate withholding status for you. It is completely optional. You are not required to use this calculator, or to follow its recommendations.

The calculator is meant to be a tool to help you, but it does not replace the advice of a professional tax advisor. The recommendations made by this calculator are based on estimated amounts entered by you.

If you would like to use the IRS calculator, you may find it by clicking the link below, or by copying the text and pasting it into your web browser.

We highly recommend consulting a tax advisor prior to making any changes to your withholdings; however, if you choose to make a change, please login to LOIS, and make the necessary changes, by following the W4 Change Instructions, which can be found in the 'User Guides' section above.

We cannot make adjustments to your tax withholdings from previous pay periods; however, we can change the amount being withheld from your future paychecks, after you update your W4 information.