Know your cash position nine weeks from now.
A rolling 13-week forecast built for people running more than one company. Every entity, every currency, one sheet. Four minutes a week to maintain.
Real figures from a four-company group. Computed rows are read-only — you cannot type over your own maths.
It worked fine when there was one company.
Now there are two tabs, a combined tab, and an intercompany transfer that only exists on one side of it.
A rate gets pasted in once, in March, and quietly stays there for the rest of the year.
Someone types over a formula to make the total look right. Nobody notices for six weeks.
Six things a spreadsheet can’t do.
Roll the week forward in one click
New week advances the live window by seven days. Last week’s numbers stay put as history — they don’t get overwritten, and they don’t disappear. Undo rolls it back.
Multi-company by default, not by tab
Company tabs plus a Combine view. Enter an intercompany transfer once and the contra side is implied by the engine — there is no mirror row to forget.
Xero, synced every morning
Connect once. Unpaid sales invoices land in Debtors, unpaid bills in Creditors, each placed on its due week. Auto-pull at 04:00.
Move an invoice to week nine. It stays in week nine.
Multi-currency that survives an audit
Nine currencies per row — GBP, EUR, USD, AUD, ZAR, CAD, NZD, CHF, SGD — on live ECB reference rates.
VAT and PAYE, set aside weekly
Profit-First style provision pots with a weekly target and a live balance. Red under target, green at or above. The suggested VAT accrual comes from your Xero data.
Arithmetic you can’t break
Opening, net and closing are computed and locked. Two people can work in the sheet at once over cell-level patches, and your in-progress typing is never clobbered. Every version is kept as a frozen, browsable snapshot.
A week takes four minutes
Connect Xero, or start blank
One click to authorise. Unpaid invoices and bills arrive on their due weeks. No Xero? Type the rows in once and paste the rest from Excel.
Check the week’s numbers
Opening balances, anything that moved, and the two provision pots. The computed rows look after themselves.
Roll forward
Press New week. Last week freezes into history, week fourteen appears at the end, and you are done until next Monday.
Anyone whose forecast lives in a shared spreadsheet
Priced per company, so the cost follows the shape of the group rather than the size of the team.
Group FDs
Five entities, one board pack, and a Monday that currently starts with rebuilding last week’s tabs by hand.
See the combine viewFounder-operators
A holdco and two to ten trading companies. You know today’s balance in each. Nine weeks out, across all of them, is guesswork.
See the rolling windowFractional CFOs
A portfolio of clients, each with their own sheet and their own conventions. Unlimited team members on every plan.
See pricingPer company. Never per seat.
Unlimited team members on every plan. The only thing that changes the price is how many companies you forecast.
We built it for our own group.
Thirteenweek started as the internal forecast for the Vistura group — four companies, three currencies, one finance person and a spreadsheet nobody else could safely open. We use it every Monday. It is now available to everyone else with the same problem.
A Vistura group product, designed and built in-house by HeyHiHello.
Questions, answered
Know the number that keeps you up.
Start free, no card. Connect Xero in a minute or type your first week in by hand.