Automatically convert 
Square sales to bitcoin

Long-term treasury diversification.

For forward-thinking business owners.

Yellow Flower

Payment provider

Yellow Flower

Square

Connect Square Sales to Bitcoin

Features

Your Bitcoin Treasury, Automated

Let Cast handle treasury management so you can focus on your business.

Recent Transactions

See All

All time

1 year

1 month

1 week

Bitcoin

August 21, 2025

$128,000

0,0012920302 BTC

Bitcoin

August 21, 2025

$21,000

0.20 BTC

Bitcoin

August 21, 2025

$128,000

1.19 BTC

Payment provider

Quickbooks

Connect Quickbooks as your payment provider

Stripe

Connect Stripe as your payment provider

Recent Transactions

See All

All time

1 year

1 month

1 week

Bitcoin

August 21, 2025

$128,000

0,0012920302 BTC

Bitcoin

August 21, 2025

$21,000

0.20 BTC

Bitcoin

August 21, 2025

$128,000

1.19 BTC

Payment provider

Quickbooks

Connect Quickbooks as your payment provider

Stripe

Connect Stripe as your payment provider

Recent Transactions

See All

All time

1 year

1 month

1 week

Bitcoin

August 21, 2025

$128,000

0,0012920302 BTC

Bitcoin

August 21, 2025

$21,000

0.20 BTC

Bitcoin

August 21, 2025

$128,000

1.19 BTC

Payment provider

Quickbooks

Connect Quickbooks as your payment provider

Stripe

Connect Stripe as your payment provider

Advanced Bitcoin Accumulation

Link payment and bookkeeping platform to enable dynamic allocation strategies

integrations including Shopify, Stripe, Square, QuickBooks and more

Automated buys as percentage of revenue

Automated buys as percentage of revenue

Fixed-cost recurring buys (DCA)

Fixed-cost recurring buys (DCA)

Manually buy any time with low fees

Manually buy any time with low fees

Upgrade your Balance Sheet

Minimize idle cash, maximize long-term value

Set thresholds on account balances to keep your allocations right-sized

Regularly sweep excess funds into bitcoin

Regularly sweep excess funds into bitcoin

Set limits on BTC as a percentage of holdings

Set limits on BTC as a percentage of holdings

Inflation-proof your balance sheet

Inflation-proof your balance sheet

Performance

Invested

Portfolio

Conversion Overview

You have a total of $8.37 pending to convert.

Change Strategy

28%

Performance

Invested

Portfolio

Conversion Overview

You have a total of $8.37 pending to convert.

Change Strategy

28%

Performance

Invested

Portfolio

Conversion Overview

You have a total of $8.37 pending to convert.

Change Strategy

28%

Built for SMBs

Seamless integrations with

Choose between dollar-cost averaging,

market-timed triggers, or hybrid models.

Invisible to customers and staff—no training required

Invisible to customers and staff—no training required

Dollars back in your account when you need them

Dollars back in your account when you need them

Reporting made simple

Reporting made simple

FAQs

Frequently Asked Questions

Why bitcoin?

Bitcoin is the only cryptocurrency (only asset in the world, in fact) that has a truly limited, unchangeable supply. When it comes to savings, it's the best tool for the job.

Why bitcoin?

Bitcoin is the only cryptocurrency (only asset in the world, in fact) that has a truly limited, unchangeable supply. When it comes to savings, it's the best tool for the job.

Why bitcoin?

Bitcoin is the only cryptocurrency (only asset in the world, in fact) that has a truly limited, unchangeable supply. When it comes to savings, it's the best tool for the job.

Will you add support for other cryptocurrencies?

Nope. But for an important reason: we don’t think any other cryptocurrencies are well-suited for protecting wealth long-term. None of them offer the supply-side assurances that you get by holding bitcoin, with its limited and truly unchangeable supply of 21 million.

Will you add support for other cryptocurrencies?

Nope. But for an important reason: we don’t think any other cryptocurrencies are well-suited for protecting wealth long-term. None of them offer the supply-side assurances that you get by holding bitcoin, with its limited and truly unchangeable supply of 21 million.

Will you add support for other cryptocurrencies?

Nope. But for an important reason: we don’t think any other cryptocurrencies are well-suited for protecting wealth long-term. None of them offer the supply-side assurances that you get by holding bitcoin, with its limited and truly unchangeable supply of 21 million.

What countries are you in?

US only at this time.

What countries are you in?

US only at this time.

What countries are you in?

US only at this time.

What are the fees like?

Free to sign up. We charge a transaction fee of about 1% on buys and sells of bitcoin, with no added spread or funny business.

What are the fees like?

Free to sign up. We charge a transaction fee of about 1% on buys and sells of bitcoin, with no added spread or funny business.

What are the fees like?

Free to sign up. We charge a transaction fee of about 1% on buys and sells of bitcoin, with no added spread or funny business.

Will you add more integrations over time?

Absolutely. Got a favorite you'd like to see us add? Email us letting us know: hello@savewithcastle.com

Will you add more integrations over time?

Absolutely. Got a favorite you'd like to see us add? Email us letting us know: hello@savewithcastle.com

Will you add more integrations over time?

Absolutely. Got a favorite you'd like to see us add? Email us letting us know: hello@savewithcastle.com

Features

Integrations

Features

Pricing

Features

Features

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