GUIDES

Test Guide blog

Forecasting doesn’t need to be complex. With a few reliable inputs and a weekly cadence, service-based teams can plan with confidence - and deliver without the chaos.

John Smith December 4, 2025

TL;DR - Quick overview

  • check icon The 3 inputs that matter most (work, people, rates)
  • check icon A weekly rhythm that keeps plans realistic
  • check icon The core metrics: utilisation, capacity, revenue
  • check icon A 30-day rollout plan you can start today.

John Smith

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Get the inputs right

  • Work: planned and unplanned projects (scope, dates, budget)
  • People: availability by role, planned leave, skills
  • Rates: client/role rate cards and billing rules

Bulb icon Pro tip: Track non-billable work explicitly - don’t hide it in “admin”.

The weekly rhythm

  • Monday: update demand (projects, changes, new requests)
  • Tuesday: update supply (availability, leave, hiring pipeline)
  • Wednesday: reconcile gaps (over/under-allocation)
  • Thursday: confirm with leads (project owners & finance)
  • Friday: publish next-week view + exceptions

Bulb icon Outcome: everyone sees the same plan—no surprises.

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Metrics that actually
drive decisions 

  • Utilisation (%): billable hours ÷ available hours
  • Capacity gap: available hours – forecast demand
  • Revenue at risk: scope remaining × probability of delay

Common pitfalls (and fixes)

  • Spreadsheets sprawl: move to a single source of truth
  • Late timesheets: adopt daily/weekly nudges + quick approvals
  • Phantom availability: account for meetings, pre-sales, training
  • No rate hygiene: lock rate cards and approvals
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30-day rollout plan

  • Week 1: capture projects, people, rates; define timesheet cadence
  • Week 2: publish first forecast; fix obvious over-allocation
  • Week 3: integrate accounting; test approvals & billing flow
  • Week 4: review accuracy; set the weekly rhythm; agree KPIs
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Simple checklist

  • Project list with scopes/dates
  • People availability & leave
  • Role/client rate cards
  • Timesheet cadence & nudges
  • Weekly review meeting set
  • Accounting sync enabled
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