Cash-Flow Forecaster

12-week runway, late-payer triage and VAT pot, updated Monday 11 May 2026, 08:14
Walker & Sons Builders Ltd
Wolverhampton · 4 staff · VAT-registered
Built by Simply Button Solutions
£
Cash on Hand
£18,420
Barclays current · as of 08:14
DAYS
Days of Runway
38
Drops to 11 the week of VAT
IN
Receivables Outstanding
£42,180
15 invoices · 6 overdue
OUT
Payables Due (60d)
£38,940
Inc. £9,840 VAT on 7 Aug
Q2
Balance End of Forecast
£6,540
Wk 30 close · before Aug VAT bill

12-Week Cash Runway Forecast

Weekly opening balance · weeks 19-30 · projected inflows minus outflows minus fixed costs
DANGER WEEK: w/c 20 Jul · balance dips to £1,840 before VAT
Current Balance
£18,420
Week 19 opening
Avg Weekly Inflow
£6,840
Based on 15 outstanding invoices
Avg Weekly Outflow
£6,210
Payroll, vans, materials, fixed
Lowest Point
£1,840
w/c 20 Jul · before VAT

What-If Scenarios

Pick a customer + payment outcome to see how the runway changes
Loading scenario…

Outstanding Invoices

15 unpaid · total receivable £42,180 · ranked by payment risk
Invoice Customer Amount Due date Days overdue Payment likelihood Last chase

Bills Payable, Next 60 Days

Sorted by date · calendar view

VAT Pot · Q2 (Apr-Jun)

What you'll owe HMRC vs what you've set aside
VAT Collected (output)
£14,287
On £71,435 of sales
VAT Spent (input)
£4,447
Materials, fuel, tools
Estimated VAT due 7 Aug 88 days away
£9,840
Already in VAT savings account £5,600
57% covered Still need £4,240
Move this week to stay safe £1,060/wk × 4

Late Payer Hall of Shame

Worst average days past terms · rolling 12 months
1
Hardcastle Plant Hire
7 invoices last 12mo · 30-day terms · never paid on time
52
avg days late
£3,240 owed now
2
Oakley Developments
4 invoices last 12mo · biggest customer by value · always at month-end
38
avg days late
£8,420 owed now
3
Bewley Loft Conversions
3 invoices last 12mo · 14-day terms agreed · pays at 35+
23
avg days late
£2,180 owed now

Weekly In vs Out (12 wk)

Net cash movement per week

Outflow Mix, Next 60d

Where the money goes

Three Things To Do This Week

Ranked by impact on the danger week
1
DO TODAY
Chase invoice INV-2247, Oakley Developments
£8,420 outstanding, 41 days overdue. They paid the last invoice on the 43rd day after a phone chase. This is your single biggest cash drag. A polite call to Sarah in accounts (you have her direct line) typically clears it within 5 working days.
Adds to runway +14 days
2
BY FRIDAY
Move £4,240 into the VAT savings account
You're £4,240 short on the Q2 VAT bill due 7 Aug. The danger week dip is largely VAT-driven. Standing order of £1,060/wk for 4 weeks from current to savings clears it without breaking a sweat, and stops the August bill becoming a panic.
Removes the cliff Stress -73%
3
THIS MONTH
Renegotiate Travis Perkins to 30-day terms
You currently pay Travis Perkins on 14-day terms, roughly £4,800/month in materials. Moving to 30 days (standard for your tier) frees up £2,560 of working capital permanently. They offered it last year. Take the offer.
Permanent uplift +£2,560