All tools / Invoicing & Payments
Invoicing & Payments
Everything around getting paid — quotes, invoices, late fees, and chasing overdue payments.
Late Payment Interest Calculator for Invoices
Calculate interest owed on an overdue invoice.
Free Invoice Generator — Create a PDF Invoice
Create and download a professional PDF invoice, free, in your browser.
Free Quote & Scope-of-Work Generator Tool
Turn a job description into a clean, professional quote.
Overdue Invoice Email Generator — Get Paid
Generate a firm but professional email chasing a late payment.
Scope Creep & Extra Work Billing Email Generator
Tell a client about out-of-scope work and the added cost, without the awkwardness.
Contract Termination Email Generator for Clients
End a client engagement clearly and professionally, without burning the bridge.
Stripe & PayPal Fee Calculator for Freelancers
Find out exactly what to charge to net a specific amount after processor fees.
Frequently asked questions
Q.Can these tools replace invoicing software?
For occasional, one-off invoices, yes. For recurring billing, saved client records, or payment tracking, dedicated invoicing software is a better fit — these tools don't save anything between visits.
Q.Is my invoice or client data stored anywhere?
No. The invoice generator runs entirely in your browser, and the quote and overdue-email generators send only the text you enter to Google's Gemini API to produce a result — nothing is stored by SMBkits.