43% of businesses that fail cite cash flow — not competition, not product

Know how many bad months your business can survive.

Before you hire. Before you sign. Before it's too late.

Example: 40% revenue drop, $45K cash, $20K/mo expenses

4.9

months of cash

What's your number?

No login. No bank connection. 30 seconds.

Now check your own numbers.

Adjust the sliders. The result updates instantly.

Live Calculator, No Signup Required

Cash on Hand $45,000

$5k $500k

← drag the slider to see your number →

Monthly Revenue $18,000

$0 $200k

Monthly Expenses $20,000

$1k $200k

If Revenue Drops By 40%

0% 100%

Quick scenarios

How long you have

4.9

months

If revenue drops 40%, your cash lasts 4.9 months.

Scenario estimate only. For a $60k hire decision, knowing your number first saves the $18,000 it costs to undo a mistake.

Why this matters

"7 weeks of cash left.
She didn't know until it was almost gone."

A candle maker in Washington hired fast after going viral. Costs doubled. A bad management hire killed her holiday season.

She needed that number before she committed. Now you can get yours in 30 seconds.

Composite example based on real small business patterns. Not a real client or endorsement.

What most owners find out too late

43% of small businesses that fail cite cash flow problems as the cause, not competition, not product (Federal Reserve)
The average owner discovers their cash problem 60 days after they could still have fixed it
A bad hire costs $18,000 on a $60k salary. A CFO charges $150–$300/hr to run the math first. This takes 30 seconds.
60% of SMBs absorbed tariff cost increases in 2025, a position that cannot hold indefinitely

I built Brink after sitting on $4k of inventory I couldn't move - and realising I never had a fast way to see the number before I committed. — Leo

Brink gives you the number before you commit. You make the call.

Check My Own Numbers

Leo, Founder

"I almost ran out of cash and didn't see it coming until month 4."

I ran a small business and faced the same call you're probably facing now: commit to something expensive and hope the numbers work out, or stay paralyzed waiting for certainty that never comes.

A fractional CFO would charge $3,000–$7,500/month to answer this question. A spreadsheet took me hours and broke every time a number changed.

I built Brink because that question — "Can we survive the worst case?" — deserves a 30-second answer. Not a prediction. Just the number.

Real scenarios owners run before making a call

Client Loss

"If I lose my biggest client for 60 days"

See which month your cash hits zero, and what to cut first.

New Hire

"If I hire in March and revenue stays flat until June"

Know before you sign the offer letter whether you survive 3 flat months.

Cost Shock

"If my supplier raises costs 25% during slow season"

See how many months of protection you have before the margin squeeze becomes a crisis.

Lease Commitment

"If I sign a lease and revenue drops 30% next quarter"

Run the worst case in 30 seconds. Don't sign until you've seen the number.

The full tool models all of these, side by side, with a chart.

Here's what it looks like in practice

12-person marketing agency considering a new office lease

Cash on Hand

$80,000

Monthly Revenue

$22,000

Monthly Expenses

$18,000

Revenue Drop

40%

How long you'd last

5.3

months

40% drop = $5,200/mo burn → 5.3 months of cash.

That's the difference between committing blind, and knowing the number first.

Illustrative example. Enter your own numbers above.

Tariff Cost Shock: Real-World Impact

Same business. One tariff shock. Different outcome.

A 5-person outdoor gear boutique. Numbers based on JPMorgan Chase Institute median retail data.

Before tariff shock

Monthly revenue $42,000

Monthly expenses $38,000

Net monthly +$4,000 (cash positive)

Months of cash

∞

Cash positive (no limit)

After tariff cost spike

Monthly revenue $37,800 (−10% demand drop)

Monthly expenses $46,800 (+$8,800 tariffs)

Net monthly −$9,000/mo burn

How long on $26,000 cash

2.9

months (critical zone)

The decision that changes everything

Without Brink

Owner places an $18k spring inventory order in February. Doesn't run the numbers. By April, cash is gone. The warning was visible in January.

✓

With Brink

Runs the tariff scenario in 30 seconds. Sees 2.9 months (red). Delays the spring order 60 days and cuts one vendor contract. Cash makes it to Q3 while the situation clarifies.

Same business. Same tariffs. The number was always there. Brink just shows it before you commit.

Illustrative scenario based on median retail data. Enter your own numbers above.

The difference

Without

Most owners find out they're 60 days from insolvency when it's already too late to cut costs. They signed the lease, made the hire, placed the order.

✓

With Brink

You see the cliff before you drive off it. Move a slider. See your number. Decide with your eyes open, before you commit.

Common questions

Is my data safe?

Will this work for my type of business?

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