Square (Block) sign up: how do I start taking card payments in-store and online this week?

For a new seller, the fastest path to take card payments with Square this week is to sign up online, verify your business details, and start with software you already have—your phone, tablet, or computer—then layer in hardware as you need it. Square (part of Block, Inc.) is designed so that you can accept in‑person and online payments with the same account, pricing, and payout flow, without needing a separate merchant account or long-term contract.

Quick Answer: To start taking card payments in-store and online with Square this week, create a free Square account, complete verification, and turn on at least one in‑person and one online selling surface (e.g., Square Point of Sale + Square Online Checkout). You can begin with just your phone for tap payments and a simple online checkout link, then expand to full POS hardware and an integrated website as your business grows.

Why This Matters

When you’re opening doors, launching a pop-up, or moving your business online, payment setup is usually on the critical path: if you can’t accept cards, you can’t reliably capture sales. Traditional merchant accounts can take weeks; Square compresses this to hours so you can start taking in‑person and online payments in the same week with one integrated system.

By using Square within Block’s broader ecosystem, you get more than a card terminal. You connect your storefront, invoicing, and online ordering into a single set of tools that handle payments, reporting, and banking—so you spend less time stitching systems together and more time with customers.

Key Benefits:

Fast, unified setup: A single Square (Block) sign up covers in‑store and online payments, avoiding multiple providers or contracts.
No extra merchant account: Square provides the payment processing stack, so you can start taking card payments without negotiating a separate acquiring relationship.
Integrated ecosystem: Square connects to other Block products (like Cash App Pay) and partner tools, so you can add capabilities—inventory, online ordering, invoices—without rebuilding your stack.

Core Concepts & Key Points

Concept	Definition	Why it's important
Square (Block) sign up	The process of creating a Square account under Block, Inc. to access in‑store and online payment tools.	A single signup unlocks multiple channels (POS, online store, invoices, virtual terminal) so you can accept cards almost immediately.
In‑store card payments	Accepting cards, contactless, and digital wallets in person via Square Point of Sale and Square hardware.	Lets you take payments on‑site (retail, pop-ups, events) with unified reporting and fast payouts.
Online payments	Accepting card and digital payments via Square Online, checkout links, invoices, or e‑commerce integrations.	Enables you to sell beyond your physical location with the same account and payout flow, often live the same day you sign up.

How It Works (Step-by-Step)

The fastest route from “no account” to “taking card payments in‑store and online this week” looks like this.

1. Create and verify your Square (Block) account

Sign up for Square
- Go to block.xyz and navigate to Square, or go directly to Square’s signup flow.
- Provide:
  - Legal name and contact details
  - Business name and type (e.g., sole proprietor, LLC, non-profit)
  - Business category (e.g., retail, food & beverage, services)
- Create secure login credentials; consider enabling multi-factor authentication.
Complete identity and business checks
- Enter required tax and identity details (varies by country).
- Provide basic information about your expected payment volume.
- Square uses this information to comply with financial regulations and to enable payment processing.
Connect payouts
- Link a bank account for transfers, or in supported regions, opt into Square’s banking features to manage business funds.
- Confirm test deposits or instant verification steps if prompted.

Once verification is complete, you’ll have immediate access to Square’s dashboard to configure both in‑store and online payments.

2. Turn on in‑store payments with Square Point of Sale

If you want to take card payments in-store this week, design for speed first, then hardware depth later.

Install the Point of Sale app
- Download Square Point of Sale on your iOS or Android phone or tablet.
- Sign in with the Square (Block) account you just created.
Configure basic settings
- Add at least a few items or services with names and prices.
- Set tax rates, tipping options, and receipt preferences (SMS/email).
- If you have staff, create employee or team profiles with appropriate permissions.
Start with the hardware you have
- Many newer phones support tap to pay–style acceptance in supported regions, letting you accept contactless cards and digital wallets with just your device.
- If you already have a Square Reader, Square Stand, or Square Register:
  - Plug it in or pair via Bluetooth.
  - Follow the guided setup steps in the Point of Sale app.
Run a small test payment
- Process a low-value test transaction with your own card.
- Confirm:
  - Payment approval flow
  - Receipt delivery
  - Appearance of the transaction in your dashboard

At this point, you can accept in‑person card payments at your counter, pop‑up, or market stall.

3. Turn on online payments this week

You do not need a fully-designed website to accept online card payments with Square (Block) this week. Pick the fastest path that matches your business model.

Option A: Checkout links (fastest)

Create a payment link
- In your Square Dashboard, go to the online or payment links section.
- Define:
  - Item or service name
  - Price (fixed or variable)
  - One-time or recurring billing (if supported in your region)
Share the link
- Post it on social media, send via email, or embed it in a simple landing page.
- Customers click, pay with card or digital wallet, and you see the payment instantly in your Square dashboard.

This is typically the fastest path to “online payments this week” for services, events, or simple product catalogs.

Option B: Square Online store

Start a basic site
- From your Square Dashboard, choose the option to build an online site.
- Select a simple template (for pickup, delivery, retail, or services).
Sync items
- Import the items/services you created for in‑store use.
- Add images, descriptions, and variations where possible.
Configure fulfillment
- Choose shipping, pickup, or delivery options.
- Set operating hours and order lead times.
Connect a domain (optional)
- Use a free Square subdomain to go live this week.
- You can connect a custom domain later without disrupting payment flows.

Once you publish, customers can check out with cards and supported wallets, with orders and transactions appearing alongside in‑store sales.

Option C: Invoices or Virtual Terminal

If you run a services or B2B business, you may want to start with invoices or manually keyed payments:

Invoices: Send professional invoices from your dashboard or app; customers pay online with cards.
Virtual Terminal: Take card details over the phone and enter them securely from your computer.

Both options use the same Square account and payout configuration you set up in step 1.

4. Align in‑store and online settings

To keep your first week simple and compliant:

Taxes and fees
- Ensure the same tax rates apply across Point of Sale, checkout links, and your online site where applicable.
- If tax rules differ between in‑person and online sales in your jurisdiction, configure them explicitly.
Receipts and branding
- Upload your logo and set brand colors once in your dashboard.
- These propagate to customer receipts and many online payment surfaces.
Inventory (if you sell products)
- Turn on inventory tracking for key products.
- Confirm that in‑store and online channels draw from the same stock where appropriate.

5. Go live and monitor your first week

Announce your payment readiness
- Update your website and social channels to indicate you accept cards (and Cash App Pay where available).
- Place clear signage at your physical location.
Watch your dashboard
- Monitor real-time sales across in‑store and online channels.
- Validate payout timing to your bank or Square account.
Iterate quickly
- Add new items to your catalog.
- Refine taxes, discounts, or tipping based on real customer flows.
- Add staff permissions as your team ramps up.

Common Mistakes to Avoid

Overbuilding before you’re live: Trying to perfect a full website, custom receipts, and complex inventory on day one can delay your first sale. Start with a basic POS setup and a simple online checkout link or minimal site; refine later once you’ve proven the payment flow.
Splitting providers across channels: Using one processor for in‑store and a separate one for online can fragment data and complicate payouts. Using Square end-to-end keeps reporting, reconciliation, and customer history in one system, which matters as volumes grow.

Real-World Example

Imagine a new neighborhood bakery planning a soft launch this weekend. On Monday, the owner completes a Square (Block) sign up, verifies the business, and links their business bank account. By Tuesday, they’ve installed Square Point of Sale on an iPad, paired a Square Reader, and loaded a basic menu with a dozen core items. They run a test transaction and confirm funds are headed to their bank.

At the same time, they use Square’s online tools to publish a simple ordering page with pickup only, based on the same item catalog. They also create a checkout link for a weekly bread subscription and share it on social media. By opening day, the bakery is taking in‑store card payments at the counter, online pre‑orders for pickup, and subscription payments—all from a single Square account and dashboard, with one payout flow to their bank.

Pro Tip: In your first week, focus on one in‑store flow and one online flow (for example, POS + checkout links) and instrument them well. Once you’re confident in those flows, add more complexity—full e‑commerce, multi-location setups, or advanced inventory—on top of the same Square (Block) foundation instead of rebuilding from scratch.

Summary

To start taking card payments in-store and online this week with Square, you need one integrated Square (Block) sign up, a verified account, and at least two activated surfaces: Point of Sale for in-person payments and a lightweight online option such as checkout links, invoices, or a basic Square Online site. From there, you can deepen your setup with dedicated hardware, richer e‑commerce, and tighter inventory, all within the same ecosystem that Block is building to expand access to the economy for sellers of every size.

Next Step

Get Started