Spacing on a Formal Letter: Rules & Format

The standard spacing for a formal letter is single spacing within paragraphs and a blank line (one empty line) between paragraphs, as well as between the date, recipient’s address, salutation, and closing. This is the convention used in most business and professional correspondence, and it applies to both printed and emailed letters.

Why Spacing Matters in Formal Letters

Spacing is not just a cosmetic detail; it directly affects readability and the impression you make. A well-spaced letter is easier to scan, looks organized, and signals that you respect the reader’s time. Conversely, cramped text or inconsistent gaps can make your letter feel rushed or careless. In formal contexts—whether you’re applying for a job, writing a complaint, or corresponding with a government office—the goal is to present your message clearly and professionally. Spacing is a key part of that presentation.

The Standard Spacing Rules

Most style guides, including those used by business schools and professional organizations, agree on the following spacing conventions for a formal letter:

• Single spacing within each paragraph.
• One blank line (an empty paragraph or pressing Enter twice) between paragraphs.
• One blank line between the date and the recipient’s address.
• One blank line between the recipient’s address and the salutation (e.g., “Dear Mr. Smith:”).
• One blank line between the salutation and the body of the letter.
• One blank line between the closing (e.g., “Sincerely,”) and your typed name.
• For very short letters, you may add extra blank lines to balance the page, but this is optional and not required.

These rules apply to block format, which is the most common layout for formal letters. In block format, everything is left-aligned, and the spacing is consistent throughout.

How to Choose the Right Spacing

While the standard is single spacing with blank lines between paragraphs, there are a few situations where you might adjust:

• If the letter is very short (e.g., a brief thank-you note), you can increase the space between paragraphs to fill the page, but keep it consistent.
• If the letter is very long (more than two pages), you should still use single spacing, but you may want to add a header with the page number and recipient’s name on subsequent pages.
• If you are using a template that specifies different spacing (e.g., 1.15 line spacing), follow that template, but be consistent.
• For email, the same rules apply, but you may omit the recipient’s address and date if you’re using a standard email format. Still, use a blank line between paragraphs.

The key is consistency. Whatever spacing you choose, use it throughout the entire letter.

Common Spacing Mistakes to Avoid

Even experienced writers make these spacing errors:

• Double spacing between paragraphs (i.e., two blank lines) instead of one. This is a common mistake that makes the letter look disjointed.
• No blank line between the date and the address, which makes the header look cluttered.
• Inconsistent spacing between paragraphs—some with a blank line, some without.
• Using tabs or spaces to indent paragraphs in a block format. In block format, paragraphs are not indented; they are separated by a blank line.
• Hitting “Enter” twice after every line instead of using proper paragraph spacing. This creates extra space that looks unprofessional.

To avoid these, always review your letter before sending it, and use the “show/hide formatting” feature in your word processor to see the paragraph marks.

Spacing in Different Letter Formats

While block format is the most common, there are other formats you might encounter:

• Modified block format: The date, closing, and signature are aligned to the right or center, but the rest of the letter is left-aligned. Spacing rules are the same—single spacing with blank lines between paragraphs.
• Semi-block format: Paragraphs are indented (usually 0.5 inch) instead of having a blank line between them. In this case, you still use single spacing within paragraphs, but you do not add a blank line between paragraphs—the indent signals the break.
• Full block format: This is the same as block format, but everything is left-aligned, including the date and closing. Spacing is identical to block format.

Whichever format you choose, the spacing should be consistent and follow the conventions of that format.

Template for a Formal Letter

Here is a blank template you can use for any formal letter. The underscores indicate where you should fill in your information. Remember to use single spacing within paragraphs and a blank line between sections.

Here is a filled-in sample with fictional details:

Frequently Asked Questions

Should I double-space a formal letter?

No. Double spacing is generally reserved for academic manuscripts or drafts that need room for editing. In a formal letter, use single spacing within paragraphs and a blank line between paragraphs. Double spacing makes the letter look overly long and informal.

Do I need a blank line between the date and the recipient’s address?

Yes. A blank line separates the date from the recipient’s address, which helps the reader quickly locate the date and the addressee. This is standard in block and modified block formats.

Is it okay to indent the first line of each paragraph instead of leaving a blank line?

Yes, but only if you are using a semi-block format. In that case, indent the first line of each paragraph by 0.5 inch and do not add a blank line between paragraphs. However, for most formal letters, block format with blank lines is preferred.

What spacing should I use for an email version of a formal letter?

For email, you can omit the date and recipient’s address, but you should still use a blank line between paragraphs. Also, use a professional subject line and include your signature block at the end. The same spacing rules apply to the body.

How many spaces should I put after a period?

Use one space after a period. This is the modern standard for all types of writing, including formal letters. Two spaces is an outdated practice from the typewriter era and is not recommended.

What if my letter is more than one page?

Use a header on the second page with the recipient’s name, the date, and the page number. Continue with single spacing and blank lines between paragraphs. Do not staple multiple pages; use a paper clip if needed.

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