Business card rules: the specs that matter

There are rules. Some are unwritten, some are technical, some are about taste. Most cards that fail break one of them. Here are the business card rules that matter, why they exist, and what happens when you break them.

The rules below come from twenty years of printing premium cards. They're not preferences. They're the difference between a card that prints clean and ends up in someone's wallet, and a card that prints messy and ends up in a drawer.

The size rules

The North American standard is 3.5 by 2 inches. The European standard is 85 by 55 mm, slightly narrower and shorter. Both fit standard wallets, business card holders, and Rolodexes.

Other sizes exist (square, mini, custom shapes), but they break the storage assumption. A square card doesn't fit a wallet. A mini card gets lost in a stack. Custom-shaped cards communicate creativity but cost more and travel worse.

Unless you have a specific reason to break the standard, stick with 3.5 by 2 inches. The rules of where the card lives are what make the rule of size matter. For every size used worldwide and how they compare, see our complete business card size and dimension guide.

The bleed and safe zone rules

Two specs, both critical, both often misunderstood.

Bleed: Extend any background color, image, or pattern 0.125 inches (3 mm) beyond the trim line on all four sides. The bleed gets cut off during finishing. Without bleed, you risk a thin white line on the edge of the card where the cut drifts slightly.

Safe zone: Keep all important content (text, logos, contact info) at least 0.125 inches inside the trim line. The safe zone protects against content getting cut off if the trim drifts.

Both rules exist because finishing is mechanical. Cards get cut on stacks, and the cut isn't perfectly precise card to card. A 0.125-inch buffer absorbs the variance.

For the full file setup, the file setup guide walks through every spec with examples.

The color rules

Two important rules.

CMYK, not RGB. Computer screens display in RGB. Print uses CMYK. Submitting an RGB file means the conversion happens at the press, and the conversion can shift colors. Setting up the file in CMYK from the start gives you predictable color.

300 DPI minimum at final size. Lower resolution prints fuzzy. Higher resolution wastes file size without improving the print. 300 DPI at the actual final size of the card (3.5 by 2 inches) is the standard.

For Pantone colors, we can match Pantone references on most stocks. Specify the exact Pantone code and we'll match it within reproducibility limits of the stock.

The type rules

Three rules that prevent the most common type failures.

Nothing under 8pt. 8pt is the absolute floor for any text. Below that, type starts disappearing under normal lighting and on textured stocks. Names and primary information should sit at 10 to 12pt minimum.

Outline fonts before export. Converting type to outlines (vector paths) eliminates font compatibility issues. The press system might not have your exact font installed; outlines bypass the problem entirely.

Test thin strokes. Lines under 0.25pt break up on press, especially on uncoated stocks. Logo strokes, dividers, and decorative lines all need to clear this minimum.

For more on type choice, the best font for business cards covers what works at card size and what to skip.

The stock rules

The minimum acceptable stock for a professional card is 20pt. Below that, the card bends in pockets, dog-ears in wallets, and feels cheap on contact.

Most premium cards print on 20pt or thicker. Painted edge cards require 32pt or thicker because the painted edge needs the depth. Specialty stocks like Mohawk Superfine and Colorplan come in both 17pt and 24pt for different needs.

Choosing stock is the single biggest decision in how a card feels. The materials guide covers every premium option with use cases.

The content rules

The cards that work share a content structure.

Name comes first, largest type. Whoever holds the card needs to remember your name above all else.

Title or what you do, smaller. One line, clear, no buzzwords.

One contact method, prominent. Email or phone, not both fighting for primary attention. The card should make the next step obvious.

Everything else is optional. Address, social handles, secondary phone, tagline, QR code: each one needs to earn its place. Most don't. Whether to include LLC, Inc, or Corp with the company name is its own call: do I need to put LLC or Inc on my business card covers when the legal designation belongs and when it gets in the way.

What belongs on a card covers the full hierarchy with examples.

The exchange rules

Cards are exchanged, not handed out. Two phrases that sound similar but mean different things.

Handing out cards reduces them to flyers. The recipient takes one because you offered it. They throw it away when convenient.

Exchanging cards treats them as objects of mutual respect. You give yours after a real conversation, in response to a real exchange. The recipient remembers receiving it because the moment had context.

The cards that get kept are the ones that arrived during exchanges, not handouts. Save your cards for moments that matter.

The follow-up rules

Three things to do after a card exchange.

Within 24 hours, write a note about the person on the back of their card. Where you met, what you talked about, what they were wearing. The card becomes a memory anchor.

Within 48 hours, follow up with whatever you said you'd do. The card promised something (a meeting, a referral, a sample). The follow-through is what turns the card from contact information into a relationship.

Within a week, file the card. Either physically (a Rolodex, a wallet, a folder) or digitally (photographed, OCR'd, added to your contacts). Cards that don't get filed get lost.

What happens when you break the rules

Three outcomes, all preventable.

White edges from missing bleed. Looks unprofessional. Can't be fixed once printed. Reprint required.

Content cut off from missing safe zone. Phone numbers with the last digit clipped. Names trimmed at the edge. Reprint required.

Color shifts from RGB submission. The blue you saw on screen prints as a different blue. Subtle but noticeable.

We catch these issues in production and email you before we produce them. The issues that get through are the ones nobody flagged before submitting.

The rules condensed

Standard 3.5 by 2 inches. 0.125 inch bleed. 0.125 inch safe zone. CMYK at 300 DPI. 8pt type minimum. 20pt stock minimum. Outline fonts before export. Name first, one contact method primary. Exchange, don't hand out. Follow up within 48 hours.

The cards that follow all of these rules look professional. The cards that break any of them look like cards that broke that specific rule. There's no path through "creative violations of the rules" that makes a card stronger.

The bottom line on business card rules

The business card rules above aren't preferences. They're the difference between a card that prints clean and ends up in someone's wallet, and a card that prints messy and ends up in a drawer. For the in-person side of card exchange, business card etiquette covers how to hand cards out so they actually get kept. For the design fundamentals beyond technical specs, business card dos and donts covers the calls that separate strong cards from weak ones. For the layout side, business card layout guide covers spacing, hierarchy, and grid systems. For the broader process, our complete guide to how to make business cards walks through every step. The business card file setup guide covers the technical export details. When your file clears the spec checks, the business cards page is where you pick the stock and submit the job.