Matthew Keller

Matthew Keller is a Senior Payroll Specialist at Zenefits who authors our "Money Matters" column. With 20+ years of experience in payroll and accounting, Matt wants to help customers navigate frequent law changes, taxes, and more.

16 articles

Decoding Your W2 Forms | Part 2: Boxes 10 through 20

It’s good to understand how your paychecks are reflected in your W2. This is the second of a two-part series, in which we'll take an in-depth look at the information on W2 forms.

Decoding Your W2 Forms with a Payroll Expert | Part 1: Boxes 1 through 9

Personal taxes are intimidating, which is why we're doing our best to simplify the parts that matter most. It’s good to understand how your paychecks are reflected in your W2, so in this two-part series, we’re going to take an in-depth look at the information on W2 forms.

Hiring an independent contractor: what forms do I need?

Recently hire a contractor? Payroll expert Matt Keller provides a complete list of the most important independent contractor forms - all online.

Finish Your Payroll on a High Note

As we wrap up all things 2017, be sure your company's payroll is squared away and situated to set your team up for success in 2018.

How to Decide the Best Business Structure for You

LLC, S Corp, or C Corp? Learn about business structures and their tax impacts so you can pick the one that gives you the best chance for success.

Understanding Employer Identification Numbers (EINs) & How to Tackle Making Changes

An Employer Identification Number (EIN) is used by the Internal Revenue Service (IRS) to identify a business entity - learn more about yours.

Alleviating Year End Payroll Stress with the Special Accounting Rule

The IRS has created the Special Accounting Rule to provide relief when it comes to accounting employee transactions that occurred throughout the year.

How are Payroll Taxes Calculated? – State Disability Insurance

Learn how state disability insurance (SDI) payroll tax is calculated in five different states - California, New Jersey, Rhode Island, Hawaii and New York.

How are Payroll Taxes Calculated? – State Income Taxes

State income taxes can be tricky. Check out this quick guide from payroll guru Matt Keller to learn about your state's requirements.

How are Payroll Taxes Calculated? – Social Security and Medicare

Some big amounts that come out of our paychecks are for Social Security and Medicare taxes. How are they calculated? Read on for a complete guide.