Use Case - Timesheets & Invoicing

How agencies & service firms run projects, timesheets, and invoices

Zero
Billable hour leakage
Minutes
To generate invoices
Real-time
Project profitability
Mixed
Fixed-fee · T&M · retainer
TL;DR - The short answer

Agencies and service firms sell time. Every hour a team member works on a client project is a unit of revenue - but only if it gets logged, approved, and invoiced. When time tracking lives in one tool, project management in another, and invoicing in a third, the chain from ‘work done’ to ‘money received’ leaks at every join. CRMLeaf connects all three natively: team members log time against tasks, tasks roll up to projects, approved hours convert to invoice line items automatically. The result is zero billable hour leakage, invoices that take minutes to generate instead of days, and real-time project profitability that tells leadership which engagements are making money and which aren’t - before the project closes.

The Scenario

Apex Creative is a 45-person digital agency. They run 20–30 active client projects at any time spanning brand strategy, web development, content production, and digital campaigns. Their billing model is mixed: some projects are fixed-fee, some are time-and-materials (T&M), and a handful are retainer-based with hours included per month and additional hours billed at an agreed rate.

Apex has eight project managers, twenty-two billable team members (designers, developers, strategists, copywriters), and a two-person finance function. Every month, the finance team spends the better part of a week generating invoices: exporting time logs from Harvest, cross-referencing against the project brief in Asana, manually calculating billable vs. non-billable split per project, and building invoices in Xero. By the time invoices leave, they are typically 12–18 days into the new month. Some clients are on 30-day payment terms from invoice date - meaning cash arrives 42–48 days after the work was delivered.

Apex is not an unusual agency. Every component of this scenario - the mixed billing model, the multi-tool stack, the delayed invoicing, the cash flow pressure - is the default operating state for professional services firms of this size.

Pain Points

The seven revenue leakage points for agencies

Unlogged hours

How It Happens
Designers and developers forget to log time; submit at week-end from memory
Monthly Revenue Impact
8–14% of billable hours lost

Wrong billing code

How It Happens
Time logged to wrong project or as non-billable by mistake
Monthly Revenue Impact
3–6% of hours miscategorised

Retainer overage not tracked

How It Happens
Hours beyond the retainer cap billed at reduced or zero rate
Monthly Revenue Impact
Up to 100% of overage hours lost

Scope creep unbilled

How It Happens
Additional work delivered without a change order or billing flag
Monthly Revenue Impact
Invisible; often 10–20% of project cost

Invoice delay = cash flow gap

How It Happens
Invoices sent 12–18 days after month-end
Monthly Revenue Impact
30-day terms become 45-day reality

Fixed-fee overrun

How It Happens
Project takes longer than estimated; overrun absorbed silently
Monthly Revenue Impact
Margin destruction on individual projects

Finance reconciliation errors

How It Happens
Manual matching of time logs to projects introduces entry errors
Monthly Revenue Impact
Overbilling disputes + underbilling loss
Module by Module

How CRMLeaf solves it - module by module

1

Project Management - one place for scope, tasks, and budget

Every client project in CRMLeaf starts with a project record: client name, project type (fixed-fee, T&M, or retainer), budget or contracted hours, project team, start and end dates, and milestone schedule. Tasks are created within the project, each assigned to a team member with an estimated hours allocation. The project budget is set from the outset - and as time is logged against tasks, the system tracks budget consumed vs. remaining in real time.

Project managers see a live dashboard: tasks by status, team utilisation per project, budget burn rate, and days to deadline. They do not learn about a project running over budget at month-end. They see it when the project hits 70% of budget with 50% of scope remaining - in time to have the conversation with the client, raise a change order, or adjust the resourcing plan.

2

Time Tracking - captured at the point of work

Time tracking in CRMLeaf is embedded in the task. A team member opens their assigned task, starts the built-in timer, works, stops the timer when done. The time entry is created automatically - linked to the task, the project, the client, and the billing type - with no manual transcription required. For team members who prefer manual entry, the daily timesheet view shows all their assigned tasks for the day with one-click entry fields.

Every time entry carries a billable flag - set automatically based on the project's billing rules. T&M projects mark all task time as billable by default. Fixed-fee projects mark time as non-billable (the fee covers everything). Retainer projects mark time as billable against the retainer cap, with automatic flagging when a client's included hours are exhausted and additional work tips into the overage billing tier.

Managers review and approve timesheets on a weekly basis - not at month-end. Weekly approval catches errors and missing hours within days of the work, not weeks. By the time month-end arrives, all time is already logged, categorised, and approved.

3

Billable Hours Rules - zero leakage by design

CRMLeaf's billing rules engine eliminates the grey areas that cause revenue leakage. For each project, the admin configures:

  • Billing type per task category: strategy tasks billed at $180/hr; design at $145/hr; development at $165/hr; project management at $120/hr - different rates can apply within the same project
  • Retainer cap tracking: total contracted hours per month per client, with real-time used/remaining display visible to the PM
  • Overage rate: the rate applied when a retainer client exceeds their monthly hours - automatically switches to this rate without any manual intervention
  • Non-billable categories: internal meetings, admin, new business pitches - always logged for capacity visibility but never included in client invoices
  • Minimum billing increment: e.g. 15-minute minimum - ensures short tasks are billed at the agreed minimum rather than zero
4

Invoice Generation - from approved hours to invoice in minutes

At the end of the billing period, finance navigates to the billing module and clicks Generate Invoices. CRMLeaf presents a list of all projects with approved unbilled hours for the period. For each project, it calculates the invoice amount automatically: T&M projects sum the approved billable hours by rate tier; fixed-fee projects generate a milestone-based invoice based on the project stage; retainer projects invoice the monthly retainer fee plus any overage hours.

Each invoice draft shows the line items, the time detail, and the total. Finance reviews, makes any adjustments, and approves. Invoices are sent to clients directly from CRMLeaf or exported to the connected accounting platform (Xero, QuickBooks). The entire process - for a 30-project agency - takes under 3 hours instead of four days.

5

Revenue Reporting - which projects are actually profitable

CRMLeaf's project profitability report shows, for each active and completed project: total contracted value, hours logged vs. hours estimated, billable revenue generated, internal team cost (hours × internal rate), gross margin, and margin percentage. This data is available in real time - not just at project close.

For agency owners and finance leads, this report answers the questions that matter most: Which project types generate the healthiest margins? Which client accounts are profitable? Which project managers consistently deliver on budget? Which service lines are underpriced? These insights inform pricing decisions, resourcing models, and client relationship strategy - but only when the underlying time and billing data is accurate, complete, and linked to project scope.

The Workflow

The project-to-invoice workflow in CRMLeaf

Every stage runs inside one platform - no tool-switching, no lost context, no manual reconciliation.

01

Project setup

Client, scope, billing type, budget, team, milestones configured

Project Management
02

Task creation

Tasks created with assigned team member, estimated hours, billing category

Project Management
03

Time logging

Team member works task → timer runs → entry auto-created with billing flag

Time Tracking
04

Weekly timesheet approval

PM reviews and approves team timesheets - errors caught within days

Time Tracking
05

Budget alert

System alerts PM at 70% and 90% of project budget consumed

Project Management + Reporting
06

Retainer cap tracking

Real-time display of retainer hours used vs. remaining per client

Billing Rules Engine
07

Overage detection

When retainer cap exceeded, additional hours auto-switch to overage rate

Billing Rules Engine
08

Invoice generation

Finance clicks Generate → all approved billable hours auto-calculate per billing rules

Billing & Invoicing
09

Invoice review & send

Finance reviews draft, approves, sends to client or exports to Xero/QuickBooks

Billing & Invoicing
10

Profitability reporting

Project margin report updated in real time throughout project lifecycle

Analytics Dashboard
Who It's For

Who this is for

Primary Personas: Agency Owner · Finance Lead · Billing Admin

Need invoice accuracy, on-time billing cycle, and project profitability visibility. Currently spending 4+ days per month on invoice generation with results they don't fully trust. Need to know which projects are profitable before they close, not after.

Secondary Persona: Project Manager

Managing project scope, team utilisation, and budget burn simultaneously. Needs real-time visibility into hours logged vs. estimated, retainer cap status, and budget alerts - without waiting for a monthly finance report.

FAQ

Projects, timesheets & invoices - frequently asked questions

Each project in CRMLeaf is assigned a billing type independently: Fixed-Fee, Time & Materials, Retainer, or Hybrid. The billing rules engine applies the correct time-logging and invoice calculation logic for each type automatically. A fixed-fee project logs all time as non-billable but tracks hours for internal margin analysis. A T&M project marks all logged hours as billable at the configured rate. A retainer project tracks hours against the monthly cap and auto-switches to the overage rate when the cap is exceeded.

CRMLeaf sends automated timesheet reminder notifications to team members who have open tasks with no time logged after a configured threshold (e.g. 24 hours of no time entry on an active task). Project managers receive a weekly timesheet completion report showing which team members have missing entries. Timesheet submission can be set as mandatory before the system locks the week - no approvals proceed until submission is complete.

The Retainer Cap Dashboard shows, for every retainer client, their monthly contracted hours, hours used to date in the current period, hours remaining, and the projected end date of their hours at the current burn rate. PMs receive an automated alert when a client reaches 80% of their retainer hours. Clients can optionally see their retainer usage in the client portal, which reduces disputes about overage billing.

Yes. Invoice templates are configurable per client. Some clients require itemised time entries on the invoice (every logged hour, date, and team member listed). Others prefer a summary format (total hours by category and total amount). Fixed-fee milestone invoices follow a separate template showing the milestone description, contracted value, and completion confirmation. Templates are set once per client and applied automatically to every invoice generated for that client.

When a team member logs time against a task that is outside the project's original scope - for example, a new task added without a corresponding change order - CRMLeaf flags it as Out-of-Scope. The PM receives an alert and must either create a change order (generating an additional billable line item) or reclassify the time as non-billable. This flag ensures no additional work is delivered without an explicit billing decision being made.

Run your service desk on one platform.

Start free, migrate from any tool, and bring tickets, SLAs, time, and billing into a single workflow.

Free 14-day trial · Free onboarding · Free data migration · Cancel anytime