- Quotes, e-sign and invoicing
Quote and Invoice Software That Gets You Paid Without Chasing
Send a quote, get it signed online, send the invoice and let automatic reminders chase the payment. Card payments go straight into your own Stripe account.
- 60-day free trial. No card needed.
- Quotes and proposals
- E-signature in the browser
- Invoices with instalments
3 Places Where Money Gets Stuck
1. The quote nobody signed
It sits in an email and the customer forgets.
2. The invoice you forgot to send
The job is done, but the paperwork waits until the weekend.
3. The payment nobody chased
You don't like asking, so late payments get later.
What It Does
Quotes and proposals
Build a quote from the customer's record in zentroCRM.
E-signature in the browser
Your client signs online with no account needed.
Invoices with instalments
Split a large job into staged payments.
Automatic payment reminders
Unpaid invoices get chased for you.
Card payments to your own Stripe
Customers pay by card and the money goes to your Stripe account.
What Is Quote and Invoice Software?
Quote and invoice software lets a business create quotes, get customer approval, turn the approved quote into an invoice and collect payment, all in one tool, so jobs move from enquiry to paid without spreadsheets or separate apps.
Why use e-signature software for quotes?
A signed quote is a clear agreement on price and scope. When clients can sign in the browser in a minute, quotes get approved faster and there is less argument later.
From Quote to Paid in 4 Steps
Send the quote
Send the quote from the customer’s record.
Client signs online
The e-signature software needs no account and no printing.
Send the invoice
In full or in instalments.
Get paid
Reminders chase late payments and card payments land in your Stripe account.
Built for Businesses That Quote Before They Work
Contractors and trades, cleaning companies, agencies, consultants, clinics with treatment plans and any service business that sends a price before the job starts. It is invoicing software for small business teams, not for large finance departments.
When You Need Accounting Software Too
This quote and invoice software handles quotes, signatures, invoices and payment collection. For tax returns, payroll and full bookkeeping, keep using your accounting software or accountant.
Better With the Rest of zentroStack
Quotes start from leads in the CRM for small business, and those leads come from the AI answering service and the WhatsApp chatbot for business.
Quote and Invoice Software vs Spreadsheets and Email
Step
Spreadsheet and email
zentroStack
Making the quote
Copy last month’s file
Built from the customer’s record
Getting approval
Print, sign, scan, email
Client signs in the browser
Deposit and stages
Worked out by hand
Split by percentage
Chasing payment
Awkward messages
Automatic reminders
Taking card payment
Separate payment link
Paid to your own Stripe account
How the E-Signature Works
With our quote and invoice software, your client opens the quote link on a phone or computer, reads the scope and terms, and signs by typing their full name. zentroStack records the name, the time and the IP address it was signed from. A signed quote moves the deal to won and creates a task to start the work the next day.
In many countries an electronic signature that records who signed, when and from where is accepted for everyday business agreements. Check your local rules for documents that need a special signature type.
Payments and Reminders
With this quote and invoice software, invoices can be paid by card through Stripe, straight into your own Stripe account, and you can also record payments made another way. Split a job into a deposit and later stages by percentage, so the agreement, the invoices and the reminders all show the same terms.
Payment reminders are off until you switch them on. By default a reminder goes three days before the due date and three and ten days after it, each one only once, so your quote and invoice software chases politely without annoying anyone.
An AI First Draft for Every Quote
Our quote and invoice software can draft a quote from the customer’s enquiry. It never invents prices: where no amount is on record it leaves the price at zero and flags it, so you check every figure before the quote goes out.
Frequently Asked Questions
Does my client need an account to sign?
No, your client opens the quote link and signs it in the browser with no account or app needed, which makes approval quick on a phone or a computer.
Can I split an invoice into instalments?
Yes, you can split an invoice into staged payments, which suits larger jobs where the customer pays a deposit first and the balance later.
Where does the payment go?
Card payments go straight into your own Stripe account, so the money is yours and you manage payouts through Stripe as usual.
Does it chase late payments?
Yes, unpaid invoices get automatic payment reminders, so you don’t have to write awkward follow-up messages yourself every time a customer pays late.
Is this quotation software or invoicing software?
It is both, because it covers the full flow from quotation to signed approval to invoice and payment in one place, linked to the same customer record.
Can AI write my quotes?
zentroStack can draft a quote from the enquiry, but it never invents prices. Missing amounts are left at zero and flagged, so you review and edit every quote before sending it.
What is recorded when a client signs?
zentroStack records the typed name, the date and time, and the IP address the quote was signed from, and marks the deal as won.
Can reminders be switched off?
Yes. Payment reminders are off until you switch them on, and you can change when they go out, so no client is chased by surprise.
Send Your Next Quote and Get Paid Faster
Try the quote and invoice software free for 60 days. No card needed.