
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.
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, 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.











