How do I know if my check is aligned correctly?

Print a test on plain paper, place it over a sheet of your blank check stock and hold both up to a light. The amount box, lines and edges should sit inside the stock's printed or perforated boundaries with even margins on both sides. The MICR line should sit in the strip along the bottom edge.

How much should I adjust at a time?

Make small changes, such as about 1/16 inch, and test after each one. Measuring the offset with a ruler first tells you roughly how far to move. Adjusting in big jumps usually overshoots, and changing several settings at once hides which one worked.

Do I need to realign every time I print?

Not if the printer, tray and paper stay the same and your settings are saved. Realign when you change printers, switch trays, change to a different paper brand or notice drift. A quick Test Print on plain paper before a big run catches most problems.

Why does my check look aligned on plain paper but not on check stock?

The usual cause is a different feed. Heavier stock may load from another tray, sit differently under the rollers or be loaded face-up instead of face-down. Test with the exact tray and orientation you will use for real stock, and run one real sheet as a Test Print.

Should the MICR line be aligned separately?

Yes. The MICR line must sit in a narrow band at the bottom of the check, so check it after the body is aligned. Moving the whole page also moves the MICR line, so confirm it again after each change. Confirm acceptable MICR placement with your bank.

How to Align a Check on Blank Check Paper

To align a check on blank check paper, print a test on plain paper, hold it up to a light against a real sheet of your stock, measure how far each part is off, nudge the layout in small steps and test again. Repeat until the print matches the stock, then save the settings so you do not have to do this every time.

This page is the full alignment procedure, start to finish. If your checks are already printing and something looks wrong, jump to How to Fix Check Printing Alignment, which is organized by symptom. If the problem is only up and down, read Why Is My Check Printing Too High or Too Low?.

What alignment means on blank check stock

Blank check stock has no printed fields, so the printer draws the whole check: the box for the amount, the lines, the bank name and the MICR line at the bottom. On 3-to-a-page stock, that check sits in the top, middle or bottom third of the sheet, with the other two thirds as stubs.

Alignment means that the printed check lands inside the correct third, with margins even on both sides and the MICR line at the right height. The tolerance is small. The MICR clear band at the bottom of the check is a narrow strip, so even a shift of about 1/8 inch can matter.

What you need

A few sheets of plain letter paper for tests.
One sheet of the blank check stock you will use.
A ruler with 1/16 inch marks, or a clear plastic ruler.
A pen and a bright light source or window.
Your print settings checked: US Letter, 100% / Actual size, headers and footers off.

Step-by-step alignment procedure

Check your layout choice first. Make sure your software is set to the same position as your stock, top, middle or bottom. A wrong position gives an error of about 3.5 inches, not a fine adjustment.
Print a Test Print on plain paper. Use 100% / Actual size and the same tray you will use for check stock. Write TOP and an arrow on the sheet so you know which way it was loaded.
Place the test print over your blank check stock and hold both sheets up to a light. Line up the outer edges first. The printed boxes and lines will show through.
Look at the check outline. If the amount box and signature line sit correctly inside the stock's edges, you are close. If not, note which direction and how far each is off.
Measure each offset with the ruler. Write it as a fraction of an inch, for example 1/8 inch too far left, or 3/16 inch too low.
Adjust the layout. Use your software's alignment controls to move the whole page in the opposite direction from the error, in small steps. If the check prints too low, nudge it up.
Print again on plain paper and recheck. Change one thing at a time so you know what each adjustment did.
When the plain-paper test matches, print a Test Print on one real sheet of check stock. The watermark makes sure it cannot be used as a check.
Check the MICR line separately. It must sit in the strip along the bottom edge. See the MICR section below.
Save the settings. Record them (for example, up 1/16, left 1/8) so you can restore them if they get reset.

How to read the light test

Holding a test sheet over real stock only works if both are flush against the same edges. Tap them on a flat surface to square the stack, then hold them with the long side vertical and the light behind. Compare the left and right margins first, then the top and bottom.

If one side of the check is higher than the other, the sheet is feeding at a slant. That is a paper-feed issue, not a software setting. Square the tray guides before adjusting anything else.

Aligning the MICR line

The MICR line is the row of routing, account and check numbers at the bottom of the check. It sits in a specific band, and a bank's scanner reads it from there. Print stock with the MICR line a little too high or too low and a scanner may reject it.

Handle the MICR line on its own after the body of the check is correct, because a body adjustment can push the MICR line out of position. For what the characters mean and how the layout works, see How to Print a Check With MICR Information. Confirm with your bank what it accepts.

Aligning the back page

If you print an endorsement area on the back, the back is a separate print job with its own alignment. Printers often feed the second side slightly differently from the first. Print the front, flip the sheet the way your printer expects, print a test back and hold it to the light against the front.

Common alignment mistakes

Printing at Fit to page or Shrink to fit instead of 100% / Actual size.
Adjusting several settings at once, then not knowing which one helped.
Testing on plain paper but loading stock differently, for example face-down instead of face-up.
Forgetting that browser or PDF print dialogs may add margins or headers and footers.
Using one setting for two printers. Each printer feeds a little differently.

Check Writer 123 has an alignment tool that nudges the whole page left, right, up or down, adjusts the MICR line separately, and adjusts the back page separately. Settings are saved per bank account, and Test Print is free and never counted, so you can repeat the loop above without using up checks.

Next steps

Once your test sheet matches real stock, print one live check for a payee you know, or a check you will void, and inspect it. Re-run the light test after changing printers, trays or paper brands. If something drifts later, use the symptom guide in How to Fix Check Printing Alignment. For the full printing workflow, see How to Print a Check on Blank Check Paper.