The submit button is the last thing users see when they fill out your form. If they have trouble finding it, they could abandon your form, and you could lose that sign up. That’s why it’s important to align your submit button with the user’s eye flow.
One Column Form Layout
How you should align your form button depends on the column layout you choose. If your form uses a one-column layout, your button will be more visible to users if you align it to the left of your text fields. In a one column layout, the user’s eyes move in a vertical direction to fill out the form. When users get to the bottom of your form, they won’t have to move their eyes to the left or right to find your button. They’ll only need to continue in their vertical direction to see and click your form button.
Two Column Form Layout
Another form layout you might use is a two-column layout. When users fill out a form with a two-column layout, their eyes move in a left to right, zig-zag direction. As the user gets to the end of the form, their eyes will end on the right side of the page. Aligning your button to the right will help the user’s eyes land right on the button when they finish scanning.
The general rule of thumb to is to align your submit button at the end of the user’s visual path. There are other types of forms where optimal button placement is important to consider. How you align your submit button will either make the user’s sign up experience comfortable or awkward. Choose comfortable.