guides
Invoice vs estimate: what's the difference?
When to use each document and how they work together in your billing workflow.
An estimate (or quote) proposes a price before work starts. An invoice requests payment after work is done or at a agreed milestone.
Using both correctly sets expectations, reduces disputes, and creates a paper trail from proposal to payment.
Can an estimate become an invoice?
Yes. In InvoyFlow, convert approved estimates to invoices in one click.
Should estimates include tax?
Show estimated tax if known — final invoice reflects actual tax calculation.
Do clients sign estimates?
Written approval (email or signature) is best practice before starting work.
Why teams choose InvoyFlow
Fast to start
Create a polished invoice in under two minutes — no accounting degree required.
Get paid online
Accept card and PayPal payments on every invoice with one-click setup.
Estimates & receipts
Win work with estimates, then convert to invoices and issue receipts automatically.
Fair pricing
Start free. Core is $8/mo, Unlimited is $15/mo — no surprise fees.