Invoice Schedule Calculator
Plan your billing dates, forecast when payments will arrive, and choose the optimal billing frequency for your business. Never wonder when to invoice again.
No credit card required. Free plan includes 5 invoices/month.
What This Tool Does
The Invoice Schedule Calculator helps you plan your recurring billing timeline. Enter your billing frequency, start date, and payment terms to see exactly when each invoice will be generated, sent, and due. Forecast cash flow by visualizing your entire billing calendar.
Key Features
Billing Date Forecasting
See your next 12 months of invoice dates at a glance. Know exactly when each invoice will be generated and sent.
Cash Flow Projections
Based on your billing schedule and payment terms, estimate when payments will arrive to plan your cash flow.
Frequency Comparison
Compare the impact of monthly vs quarterly vs annual billing on your revenue timing and cash flow.
Payment Terms Impact
See how Net 15, Net 30, or Due on Receipt payment terms affect when you actually receive money.
Multiple Client Scheduling
Plan billing schedules across all your clients to identify revenue concentration and spread billing dates.
Holiday & Weekend Handling
Understand how weekends and holidays affect billing dates and plan around them for optimal delivery.
How It Works
Enter Your Billing Details
Choose your billing frequency, start date, and invoice amount for each client.
Set Payment Terms
Select your payment terms: Due on Receipt, Net 15, Net 30, or custom terms.
View Your Calendar
See a 12-month billing calendar showing every invoice date and expected payment date.
Optimize Your Schedule
Adjust billing dates and frequencies to smooth out cash flow and avoid revenue concentration.
Who Uses This Tool
Free to Start, Affordable to Grow
Start with our free plan — 5 invoices per month, 3 clients, PDF downloads and multi-currency support included. Upgrade to Starter or Pro when your business grows.
View Pricing Plans →Frequently Asked Questions
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Weekly, biweekly, monthly, quarterly, semi-annual, and annual. You can compare multiple frequencies side by side to see the impact.
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Yes. Add multiple clients with different billing frequencies and see the combined billing calendar and cash flow forecast.
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Payment terms determine the gap between invoice delivery and expected payment. Net 30 means payment is due 30 days after the invoice date — the calculator shows both dates.
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It depends on your clients. Billing on the 1st coincides with rent and other bills. The 15th avoids that competition. Anniversary billing (client signup date) spreads revenue across the month.
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Create a free InvoiceBlitz account to set up your actual recurring invoices based on your planned schedule. The system handles everything from there.
Ready to Automate Your Billing?
Join thousands of businesses using InvoiceBlitz to automate recurring billing and get paid on time.
No credit card required. Free plan available forever.