💰 Money Calculator

Project Costing Calculator

Build a project quote by phase and hourly rate. Add expenses with markup, set your contingency, toggle GST, and copy the summary straight into a proposal.

Project Costing Calculator
Hours · expenses · GST
📋
Total inc. GST
$14,520
Labour
$12,000
Hours
80h
Labour phases
$
Subtotal
$1,200
$
Subtotal
$3,000
$
Subtotal
$6,000
$
Subtotal
$1,200
$
Subtotal
$600
Expenses
Software / licences
$
Charged
—
Stock photos / assets
$
Charged
—
Hosting / domains
$
Charged
—
Subcontractors
$
Charged
—
Travel & expenses
$
Charged
—
Options
Contingency$1,200
Add profit margin
Add GST (10%)
$1,320
Quote breakdown
Labour$12,000
Contingency (10%)$1,200
Subtotal ex-GST$13,200
GST (10%)$1,320
Total inc. GST$14,520
Total hours80h
Effective hourly rate$165/hr

How to price a project properly

Most freelancers underprice their projects for one of two reasons: they underestimate hours, or they forget to account for everything that isn't direct delivery time. A proper project quote has four components:

1Labour by phase

Break the project into distinct phases with realistic hour estimates. Discovery, design, build, testing, and handover should each be costed separately.

2Expenses with markup

Any costs you pass through to the client — software, stock assets, subcontractors — should carry a 10–20% management markup.

3Contingency

10–20% on top of your subtotal. Covers scope creep, unexpected complexity, and revision rounds. Not optional on fixed-price work.

4GST

If you're GST-registered, add 10% and remit it to the ATO. Always state clearly whether your quote is ex-GST or inc-GST.

The hidden hours most freelancers miss

When estimating hours, most freelancers account for the direct work but forget the surrounding activities that are just as real:

ActivityTypical hours
Scoping calls and discovery2–8h
Writing the proposal / SOW1–4h
Client communication throughout2–10h
Feedback rounds and revisions4–20h
Internal review and QA2–8h
Handover, documentation, training2–8h
Admin: invoicing, chasing payment1–3h

Add a separate "Project management" phase to your quote or build this into your contingency.

Fixed price vs. time and materials

Fixed price
✓Client certainty — they know what they're paying
✓You earn more if you're efficient
✓Forces clear scoping upfront
✗You absorb cost overruns if you underestimate
✗Requires a strong change request process
✗Not suited to exploratory or evolving work
Time & materials
✓You're paid for every hour worked
✓Flexible as scope evolves
✓Lower risk for you as the freelancer
✗Client uncertainty — hard to budget
✗Can create distrust if hours run over
✗Requires tight timekeeping and reporting

Related calculators

Project Costing Calculator
Hours · expenses · GST
📋
Total inc. GST
$14,520
Labour
$12,000
Hours
80h
Labour phases
$
Subtotal
$1,200
$
Subtotal
$3,000
$
Subtotal
$6,000
$
Subtotal
$1,200
$
Subtotal
$600
Expenses
Software / licences
$
Charged
—
Stock photos / assets
$
Charged
—
Hosting / domains
$
Charged
—
Subcontractors
$
Charged
—
Travel & expenses
$
Charged
—
Options
Contingency$1,200
Add profit margin
Add GST (10%)
$1,320
Quote breakdown
Labour$12,000
Contingency (10%)$1,200
Subtotal ex-GST$13,200
GST (10%)$1,320
Total inc. GST$14,520
Total hours80h
Effective hourly rate$165/hr