Bias tape corners, also called mitered bias corners, create neat professional-looking edges on quilts, placemats, napkins, blankets, and sewing projects. Folding the bias tape into a 45-degree angle allows the binding to wrap smoothly around corners without bulky folds or puckering. In this tutorial, you’ll learn two easy methods for sewing bias tape corners, including a quick beginner method and a more traditional, precise technique.

Bias Tape Corners Tutorial

When learning how to sew bias tape corners (mitered bias tape corners) it is easiest to use a double fold bias tape. This will make the raw edges of your projects look neat and professional on both the top and bottom.

This is the last in my bias tape series. By now, you have learned how to make bias tape and how to sew bias tape. But what about how to sew bias tape corners (also called bias tape mitered corners). Here are 2 easy methods you can use to sew bias tape around the corners of your quilt, napkins or sewing project.

Fast Method vs Traditional Method:

Fast Method	Traditional Method
Faster and easier	More precise finish
Good for beginners	Better for quilts
Fewer steps	Sharper corners
Ideal for simple projects	Best for professional finishes

Further Reading:

• Types of bias tape
• How to sew double fold bias tape

Supplies

• Double fold bias tape – either store-bought or made with a bias tape maker.
• Sewing supplies – scissors, sewing thread, sewing machine, iron and ironing board, fabric pen.

How to Sew Bias Tape Corners, The Fast Way

1. Slip the Bias Tape Over the Edge

Always prewash your fabric and bias in case they shrink by different amounts after washing.

Open up your double fold bias tape and slip it over the raw edge of your fabric on the front side. The wider side of the tape should be on the bottom. Pin all the way along the edge and stop at the first corner. I generally find that vertical pins work best to hold the bias in place.

PRO TIP: Plan ahead by running your bias tape around your fabric roughly to ensure none of the joins will fall in the corners. It is generally best to start your bias tape in the middle of the longest edge.

2. Stitch the First Edge

Stitch along the bias edge , stopping when you get to the corner. You need to stop exactly in line with the edge of the corner. It is fine to back stitch as long as you don’t go past the edge.

3. Open the Second Edge

Now open up the tape and fold it down along the raw edge. See how it forms a 45-degree angle at the corner.

Fold the bias over the edge and pin it in place. Then, fold the corner as shown so that the fold forms a 45-degree angle. Try to make the corner look neat. Do this on both sides.

4. Stitch the Second Edge

Start stitching in the inner corner and continue along the edge of the bias. I backstitched to ensure it didn’t unravel. Now, repeat for the other corners. Fast and easy mitered bias tape corners!

How to Sew Bias Tape Corners, Traditional Method

This method will give greater accuracy and neat corners.

1. Stitch the First Side

Open up your double fold bias and pin the wider side along the raw edge of the wrong side of your fabric. Stitch along the crease, stopping and backstitching (or machine lockstitch) before you get to the corner at the seam allowance. The crease of my bias was at 1/4 inch (6mm) from the edge so I stopped the stitching line at 1/4 inch (6mm) from the corner.

2. Fold Down the Second Side

Fold the bias down around the corner and along the edge. The outer edge will be smooth and there will be a large fold on the inside.

This is what the corner looks like from the outside edge.

3. Stitch the Second Side

Start stitching from the seam allowance at the point of intersection. Backstitch and then continue stitching in the crease.

4. Fold Bias to Back

Fold your bias over to the right side of the fabric. See how the corner already has a mitered fold in it.

Pin the bias in place on the right side of the fabric. You will need to fold the corner into a 45-degree angle with your fingers and pin it in place. Repeat for the other corners of your quilt. Click here to read how to overlap the ends.

5. Stitch

Stitch along the inside folded edge of the bias. You have just learned how to sew bias tape corners. It wasn’t so hard, was it?

What will you be making with your beautifully finished bias tape corners? Share below if you have any extra tips for others.

Tips for Neat Bias Tape Corners

Pressing the folds carefully before stitching will help create sharper mitered corners. Stopping exactly at the corner seam allowance is also important for smooth folds and accurate 45-degree angles. Using double fold bias tape makes sewing corners easier because the raw edges are already enclosed.

Common Bias Tape Corner Mistakes and Tips

Bias tape corners can become bulky or uneven if the folds are not pressed carefully before sewing. Taking your time around corners will help create neater more professional results.

Common Mistake	Tip
Bulky corners	Trim excess fabric
Uneven folds	Press folds carefully
Twisted bias tape	Pin before stitching
Missed back edge	Use wider underside fold
Crooked corners	Stop exactly at seam allowance

Bias Tape Corners FAQs

Pin for Later

Bias Tape Corners – In Conclusion

Learning how to sew bias tape corners creates clean professional-looking edges on quilts, placemats, napkins, and sewing projects. Folding the bias tape into neat 45-degree mitered corners helps reduce bulk and allows the binding to wrap smoothly around square edges.

With practice, both the fast method and traditional method can create beautiful polished bias tape finishes for beginner and advanced sewing projects.

1. How to Make Continuous Bias Tape
2. Bias Bound Seam
3. Hong Kong Finish
4. How to Sew a V Neck with Bias Tape
5. How to Make Piping
6. Sewing Piping