Software for cash flow & runway
Know where the money goes, before the account tells you.
Cash in and out, the biggest cost blocks and how many months the money lasts at the current pace. Start calculating below and see what matters in cash flow software.
Here's what it looks like
Peak CashflowExample- Account balance
- 42.000 €
- Cash in per month
- 18.500 €
- Payments out per month
- 23.000 €
- Runway
- 9.3 months
Account balance documented, monthly figures estimated
Try it right away
Your runway from three numbers.
Account balance, cash in and cash out as a monthly average. The calculation runs in your browser; nothing is stored or transmitted.
Monthly balance
-4.500,00 €
At this pace, the money lasts, mathematically, for 9.3 months.
Runway = account balance ÷ (payments out − cash in)
- Runway = account balance ÷ (cash out − cash in). If more payments come in than go out, there is no runway.
- The calculation assumes a steady pace. You have to estimate seasonal swings, tax payments and one-off expenses yourself.
- Count payments, not invoices: an invoice issued is only cash once it is paid.
Quick overview
What cash flow software does.
- Cashflow
- The balance of everything that actually comes into and goes out of the account in a period. Cash flow software keeps these payment flows visible on an ongoing basis, instead of piecing them together from bank statements once a quarter.
- Formula
- Cash flow = cash in − cash out
- Example
- An agency invoices €30,000 in October, but only €18,500 arrives in the account. With €23,000 in payouts, the balance shrinks by €4,500 a month, even though revenue looks good.
- Common mistakes
- Treating revenue and incoming payments as the same
- Forgetting quarterly payments such as taxes or insurance
- Looking only at the account balance instead of its direction
Scope
Revenue, profit, cash flow. Three numbers, three questions.
| Metric | Invoice | Answered | Blind spot |
|---|---|---|---|
| Revenue | Sum of invoices issued | How much was sold? | Doesn't say when the money arrives |
| Profit | Income − expenses | Is the company making money? | A profitable company can still be short on cash |
| Cashflow | Cash in − cash out | Is the account filling up or draining? | Says nothing about profitability on its own |
Selection guide
What matters in cash flow software.
Eight criteria, pre-weighted for small businesses without their own finance department. Set what matters to you and see where Peak Cashflow fits and where it doesn't.
Cash in and out instead of revenue
Available in Peak OneThe software shows what is actually flowing, not just what has been invoiced.
Peak One: The cash picture in Peak Cashflow shows income and expenses per month.
Runway with a traceable calculation
Available in Peak OneHow many months the money lasts, and what the number is calculated from.
Peak One: Peak Cashflow shows the runway with the calculation behind it, so you can check it.
The biggest cost blocks
Available in Peak OneWhere the money goes, so you know where a change actually makes a difference.
Peak One: The biggest cost blocks are part of the cash picture.
Estimated or documented
Available in Peak OneYou see which number comes from an estimate and which from a real source.
Peak One: Every further number replaces an estimate, and the picture always tells you what is estimated and what is documented.
Connect business account
PartialAccount balance and revenue come from the bank instead of being typed in.
Peak One: Qonto can be connected: account balance per account and transactions with category and receipt. Other banks are not described on the website.
Accounting and payment providers as a source
PartialOpen invoices and payments flow in, with no monthly export.
Peak One: sevdesk, Lexoffice and Stripe can be connected. For Lexoffice, the integration has only a few functions so far.
Preview of the coming weeks
Not yet verifiedPlan expected payments by date, for example for rolling liquidity planning.
Peak One: Peak Finance shows profit, cash and plan at a glance. How far planning by weeks or individual payments goes is not yet described on the website.
Bookkeeping and taxes
Not includedPost receipts, file VAT, prepare year-end financial statements.
Peak One: Peak Cashflow gives you the overview for decisions. Bookkeeping and taxes stay in your accounting system.
Your selection
3 must-have criteria
- Available in Peak One
- 3
- Partial
- 0
- Planned
- 0
- Not included
- 0
- Not yet verified
- 0
All your must-have criteria are available in Peak One today.
The weighting is a suggestion. Adjust it to your team; nothing is saved.
Example from an agency
From the uneasy feeling to the concrete action.
- TriggerTwo big customers pay later than usual
- 01 · Cash pictureEnter key figuresAccount balance, cash in and out per month, the three biggest cost blocks.
- 02 · Account balanceConnect accountWith Qonto, the real account balance replaces the estimate.
- 03 · RunwayRead the runwayHow many months it lasts at the current pace, with the calculation behind it.
- 04 · TaskPlan an actionPayment reminder and cost review as tasks in Peak Work.
Peak Cashflow & Peak Finance
What's included today.
Only what is documented on the Peak One features page and app overview. What is missing there appears in the selection guide as “Not yet documented.”
- Available
Cash picture
Income, expenses and the biggest cost blocks at a glance, even from rough numbers.
More - Available
Runway
How many months the money lasts, with the calculation behind it.
- Available
Estimated or documented
Every number says whether it's estimated or documented.
- Available
Action as a task
An insight becomes a task in Peak Work.
- Available
Peak Finance
Profit, cash and plan at a glance, with the decision that matters now.
- Available
Bank and accounting
Qonto, sevdesk, Lexoffice and Stripe can be connected.
More
Is this right for you?
Put in honest perspective.
Peak One is a good fit if
- You want to see, without accounting knowledge, whether your account is filling up or draining and how long it lasts.
- You'd rather start with estimates and make the picture more precise number by number.
- You use Qonto, sevdesk, Lexoffice or Stripe and want to see that data in one place.
Something else fits better if
- You need rolling liquidity planning with individual expected payments by date. Check this in the app before deciding or use a planning tool for it.
- Your bank is not Qonto and you want to reconcile transactions automatically. The website doesn't yet describe other banks.
- You're looking for accounting software. Bookkeeping and taxes stay in your accounting system.
What can be connected
Bank, accounting, payments.
Frequently asked questions
Briefly answered.
What is the difference between cash flow and profit?
Profit compares income and expenses, no matter when they're paid. Cash flow counts only what actually comes into and goes out of the account. A profitable company can still be short on cash if customers pay late.
Does cash flow software replace accounting?
No. It gives you the overview for decisions. For Peak Cashflow this is explicitly the case: bookkeeping and taxes stay in your accounting system.
How accurate is the runway?
As accurate as the numbers behind it and only at a steady pace. Seasonal swings, tax payments and one-off expenses shift it. Peak Cashflow shows which number is estimated and which is documented.
Can I connect my business account?
Qonto can be connected, with account balance per account and transactions with category and receipt. Other banks are not yet described on the website.
Do I need real account data to get started?
No. Your first cash picture is built from estimates: today's account balance, income and expenses per month and the three biggest cost blocks. Every further number replaces an estimate.
Sources & freshness
What this page is based on.
Content last checked against the product status on October 10, 2026. What is not yet available in Peak One is labeled “Planned” or “Not included”.
Related software categories
- Software categoryContribution margin softwareKnow what's left per product after all variable costs.View
- Software categoryAll-in-one business softwareOne shared model for tasks, customers, products, and numbers.View
Goes well with
- FunctionCash flow & runwayA clear cash picture from rough numbers, with runway and cost blocks.View
- FunctionMargin & contribution marginContribution margin per product and variant, with scenarios and inventory.View
- FunctionReportingCash, profit and margin from connected sources, every number with its source.View
- Use caseTrack key figuresKeep cash, profit, and margin in view, with the source of every number.View

