All your cash, in one forecast.

Tarn reads your banks, ledger and payroll every morning, then lays out the next eighteen months week by week, so the tight weeks show up while you can still move them.

Forecast updated 6:02 am

4 accounts · 3 tools synced

Every account, week by week.

Opening balance, money in, money out and the closing balance for every week, built from real balances and everything already scheduled.

18 mo

Weekly for 13 weeks, then monthly out to eighteen months.

Daily

Balances refresh each morning. Matched actuals replace the forecast.

±$1.8k

A likely range on every week, narrowing as the month plays out.

Test a hire or a lost client first.

Lay a decision over the current plan and compare runway, the lowest balance and the month you would cross your floor. Your books stay untouched.

Side by side

Compare up to four scenarios on one chart.

Plain inputs

A start month and an amount. Tarn works out the rest.

Shareable

Send a read-only link to your partner or bookkeeper.

Know what leaves, and when.

Bills from your ledger, payroll runs and tax estimates land on one calendar, each on the day the money actually goes.

Payroll

Every run, with taxes and benefits, from your payroll tool.

Bills

Approved and scheduled bills, plus the ones you pay every month.

Tax

Sales and payroll tax estimated from your own history.

Banks, ledgers, payroll, billing.

Read-only links to over 11,000 banks and credit unions, the main cloud ledgers and payroll tools, and the spreadsheet you still keep.

All

Banks

Ledgers

Payroll

Billing

Spreadsheets

Brightwater

Business banking

Harbor

Savings and checking

Cedar Bank

Community bank

Meridian FX

Multi-currency accounts

Coinlake

Credit union

Ledgerly

Cloud accounting

Tallyhub

Bookkeeping

Fieldbook

Job costing ledger

Ostrom

Accounting suite

Northwind Payroll

Payroll and benefits

Payfold

Contractor payments

Invoicely

Invoicing

Stripeline

Card payments

Sheetwise

Linked spreadsheets

Plus any bank Tarn reaches through its data provider, and CSV import for everything else.

Amara Osei, founder of Fernwood Landscape Studio

“The forecast used to live in my head and a spreadsheet nobody else could read. Now my project leads check Tarn before they agree a payment schedule.”

“The forecast used to live in my head and a spreadsheet nobody else could read. Now my project leads check Tarn before they agree a payment schedule.”

“The forecast used to live in my head and a spreadsheet nobody else could read. Now my project leads check Tarn before they agree a payment schedule.”

Amara Osei

Founder, Fernwood Landscape Studio · Denver

3

payment schedules renegotiated

0

missed payroll runs since joining

Your forecast, ready by Friday.

Connect one bank account and your ledger. Most teams have their eighteen months mapped the same afternoon.

Your next eighteen months, mapped.

Connect a bank in ten minutes and see this year’s tight weeks before lunch.

Cash-flow forecasting for small and mid-size businesses.

The Tarn letter: one cash-flow idea a month

© 2026 Tarn Software Ltd

Read-only bank access · Data encrypted at rest

tarn

Your next eighteen months, mapped.

Connect a bank in ten minutes and see this year’s tight weeks before lunch.

Cash-flow forecasting for small and mid-size businesses.

The Tarn letter: one cash-flow idea a month

© 2026 Tarn Software Ltd

Read-only bank access · Data encrypted at rest

tarn

Your next eighteen months, mapped.

Connect a bank in ten minutes and see this year’s tight weeks before lunch.

Cash-flow forecasting for small and mid-size businesses.

The Tarn letter: one cash-flow idea a month

© 2026 Tarn Software Ltd

Read-only bank access · Data encrypted at rest

tarn

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