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Payment Tracking

Learn how to track invoice payments, manage overdue invoices, and maintain healthy cash flow with billli.

5 min readUpdated January 27, 2026

Tracking payments is essential for healthy cash flow. billli makes it easy to see who has paid, who hasn't, and what actions to take for overdue invoices.

Payment Overview

Your dashboard shows at a glance:

  • Total Outstanding - Sum of all unpaid invoices
  • Overdue Amount - Unpaid invoices past due date
  • Paid This Month - Revenue received this month
  • Pending - Invoices not yet due

Invoice Payment Status

Every invoice has one of these statuses:

StatusIconMeaning
DraftNot sent yet
Sent🔵Sent, awaiting payment
Overdue🔴Past due date
Paid🟢Payment received
CancelledVoided

Marking Invoices as Paid

When you receive payment:

Find the Invoice

Go to Invoices and find the paid invoice.

Click Mark as Paid

Click Mark as Paid or the checkmark icon.

Enter Payment Details

Add the payment date and method (optional).

Confirm

Click Confirm to update the status.

For faster reconciliation, use the Bank Reconciliation feature to automatically match payments with invoices.

Managing Overdue Invoices

Finding Overdue Invoices

Filter your invoice list to see overdue items:

  1. Go to Invoices
  2. Click the Filter button
  3. Select Overdue

Taking Action

For each overdue invoice, you can:

  • Send Reminder - Email a payment reminder
  • Call Client - Note in invoice for follow-up
  • Mark as Paid - If payment was received
  • Cancel - If invoice is no longer valid

Reminder Schedule

Suggested approach for overdue invoices:

Days OverdueAction
1-3 daysGentle email reminder
7 daysSecond reminder
14 daysPhone call + firm email
30 daysFinal notice
60+ daysConsider collections

Payment Reminders

Sending Reminders

From an overdue invoice:

  1. Click Send Reminder
  2. Review the reminder message
  3. Add any personal note
  4. Click Send

Reminder Templates

billli provides professional reminder templates:

First Reminder (Friendly)

This is a friendly reminder that invoice [number] for [amount] was due on [date]. Please arrange payment at your earliest convenience.

Second Reminder (Firm)

Invoice [number] for [amount] is now [days] days overdue. Please process payment immediately to avoid any service interruption.

Keep reminders professional. Even with late payers, maintain a business-appropriate tone.

Payment Methods

billli tracks payments received via:

  • Bank Transfer - Standard Swiss bank payment
  • QR-Bill Scan - Payment via QR code
  • Other - Cash, card, or other methods

When marking as paid, select the method used for your records.

Partial Payments

If a client pays part of an invoice:

  1. Open the invoice
  2. Click Record Payment
  3. Enter the partial amount
  4. The remaining balance stays as outstanding

The invoice shows:

  • Original amount
  • Payments received
  • Balance due

Aging Reports

See how long invoices have been outstanding:

CategoryDefinition
CurrentNot yet due
1-30 daysRecently overdue
31-60 daysSignificantly overdue
60+ daysSeverely overdue

Cash Flow Tips

Invoice Promptly

Send invoices immediately after completing work. Delays in invoicing lead to delays in payment.

Clear Payment Terms

State due dates clearly on every invoice. "Payment due within 14 days" is better than "Payment due soon."

Make Payment Easy

The QR-Bill makes it simple for clients to pay. Highlight this in your communications:

"Just scan the QR code with your banking app for instant payment!"

Follow Up Consistently

Don't let overdue invoices linger. A consistent follow-up schedule improves collection rates.

Reporting

Track your payment performance:

  • Average Days to Payment - How long clients take to pay
  • Collection Rate - Percentage of invoices paid
  • Monthly Revenue - Track trends over time

Next Steps