Last updated August 2026 · Reviewed
Best Invoicing Software for Contractors in 2026
Invoicemonk is the best invoicing software for independent contractors and small trades: $15/month with estimates, progress and milestone invoicing, expense tracking and unlimited clients. QuickBooks suits contractors who need job costing and payroll, FreshBooks suits hourly work, and Wave suits US-only sole traders on a budget.
Contractors get paid in stages, so estimates and progress invoices matter most
Contracting cash flow depends on converting an approved estimate into staged invoices as work completes, and on capturing material costs against the job. Retainage and change orders are where invoices most often stall.
- •Approved estimate converted to an invoice keeps the agreed scope and pricing.
- •Progress invoices bill a percentage of contract value as stages complete.
- •Change orders should be re-approved in writing before the next invoice.
Verdict
Best overall: Invoicemonk — best for independent contractors and small trades
Invoicemonk handles the estimate-to-progress-invoice flow, tracks materials as expenses with receipt scanning, and chases payment automatically for $15/month with unlimited clients. If you run crews, need job costing across cost codes, or run payroll, QuickBooks is the stronger tool despite the higher cost.
Feature-by-feature comparison
| Feature | Invoicemonk | QuickBooks | FreshBooks | Zoho Books | Wave |
|---|---|---|---|---|---|
| Pricing | |||||
| Entry price | $15/mo | $19/mo | $19/mo | $15/mo | Free tier |
| Client limit on entry plan | Unlimited | Unlimited | Capped | Capped | Unlimited |
| Team members on entry plan | Up to 5 | Per seat | Per seat | Per seat | Limited |
| Contract billing | |||||
| Estimates converted to invoices | Basic | ||||
| Progress and milestone invoicing | Partial | Partial | Partial | — | |
| Deposits before work starts | Limited | ||||
| Job costing across cost codes | — | Partial | Partial | — | |
| Payroll for crews | — | Add-on | — | Add-on | Add-on |
| Costs and expenses | |||||
| Receipt scanning for materials | |||||
| Expense categories and reports | |||||
| Mileage tracking | — | Partial | — | ||
| Compliance | |||||
| Country e-invoicing mandates | 18 live | Limited | — | Limited | — |
| Reverse-charge / CIS style wording | Manual | Manual | |||
What is the best invoicing software for contractors?
Invoicemonk for independent contractors and small trades at $15/month, covering estimates, progress invoices, deposits and material expenses. QuickBooks is better once you run crews and need job costing or payroll.
How do contractors invoice for progress payments?
Bill an agreed percentage of contract value as each stage completes, referencing the approved estimate and the stage delivered. Show contract value, previously invoiced, this invoice and remaining balance so approval is fast.
Example line: "Progress claim 2 of 4 — second-fix electrical complete. Contract value $28,000; previously invoiced $8,400; this claim $8,400; remaining $11,200."
How should retainage be shown on an invoice?
Show the gross amount for the stage, then retainage as a separate deduction line with its percentage, and state when it becomes payable. Never bury retainage inside the unit price.
Do contractors need job costing?
Only when you employ crews or subcontractors and need profitability per job. Sole traders usually get everything they need from expense tracking against a client and a project reference on each invoice.
What payment terms work best for contract work?
A deposit of 25-40% before materials are ordered, progress claims at Net 7 to Net 14, and final payment on completion. Shorter terms with automated reminders beat late fees for getting paid on time.
Pros and cons of each option
Each tool with its "best for" label, price, and the honest trade-offs.
Invoicemonk
Pro $15/moBest for independent contractors and small trades
Pros
- Estimates converted straight to invoices
- Progress, milestone and deposit invoicing
- Receipt scanning for materials and expenses
- Unlimited clients and up to 5 team members
Cons
- —No job costing across cost codes
- —No payroll
- —No mileage tracking
QuickBooks
From $19/moBest for contractors running crews and job costing
Pros
- Job costing and profitability per job
- Payroll add-on
- Accountant familiarity
Cons
- —Higher effective cost
- —Steeper learning curve
- —Time tracking is an add-on
FreshBooks
From $19/moBest for contractors billing hourly labour
Pros
- Time tracking on invoices
- Mileage tracking
- Simple project workflows
Cons
- —Billable-client caps
- —Per-seat pricing
- —Limited progress billing
Wave
Free tierBest free option for US-only sole traders
Pros
- Free invoicing and accounting
- Receipt capture included
- Quick setup
Cons
- —No progress billing
- —US/Canada payments only
- —Limited support
Choose Invoicemonk if
You work solo or with a small team and bill in stages.
- You quote first and invoice as work completes
- You buy materials and need them tracked
- You want deposits before starting
- You want reminders to chase payment automatically
Choose QuickBooks if
You employ crews and need job-level profitability.
- You run payroll
- You track cost codes per job
- Your bookkeeper requires it
Choose Wave if
You are a US sole trader with low volume.
- You want a free tool
- You invoice only domestically
- You do not bill in stages
A $28,000 fit-out, billed two ways
Same job, very different working-capital exposure.
Deposit plus progress claims (recommended)
- 1Approved estimate signed at $28,000
- 230% deposit ($8,400) before materials are ordered
- 3Two progress claims of $8,400 at Net 7 as stages complete
- 4Final $2,800 on completion, retainage shown separately
Single invoice on completion
- 1You fund materials and labour yourself
- 2Invoice $28,000 on completion, Net 30
- 3One snag-list dispute holds the whole amount
- 4Cash lands months after the first material order
Frequently asked questions
What is the best invoicing software for contractors in 2026?
Invoicemonk for independent contractors and small trades: $15/month with estimates, progress and deposit invoicing, receipt scanning for materials, unlimited clients and automated reminders. QuickBooks is better if you run crews and need job costing or payroll.
Is there free invoicing software for contractors?
Yes. Wave is free for US and Canadian businesses, and Invoicemonk has a free plan capped at 3 invoices per month. Free tiers rarely support progress billing or retainage, which most contract work needs.
How do I invoice for a deposit before starting work?
Convert the approved estimate into a deposit invoice for 25-40% of contract value, state that materials are ordered on receipt of payment, and reference the estimate number so the client can match the two documents.
Can invoicing software handle retainage?
Show retainage as an explicit deduction line on each progress invoice with its percentage and release condition. Invoicemonk supports this through line items on progress invoices; dedicated construction suites automate the release schedule.
Sources
All competitor pricing and features verified July 2026. Invoicemonk pricing pulled from our live pricing page.
Quote, claim progress and get paid without the chase
Start scanning receipts, invoicing clients, and running compliant books from one account.
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