# BILLING & INVOICING

## Generate Accurate Invoices from Usage Data

Turn usage into invoices automatically. Preview charges before sending, export to accounting systems, and track AI costs and margins down to the customer level.

### Generate usage-based invoices automatically
- Convert metered events into accurate invoice line items
- Combine usage charges with subscriptions and one-time fees
- Apply credits, discounts, and proration without manual calculation

### Issue one-off invoices for custom charges
- Bill for setup fees or custom agreements
- Send invoices outside regular billing cycles
- Track payment status for ad-hoc charges

### Preview invoices before they finalize
- Show customers what they'll be charged before payment runs
- Catch billing errors before they become disputes
- Let customers adjust usage or top up credits to control costs

### Track AI costs and margins per customer
- See compute costs, model usage, and revenue per customer
- Calculate margins at account, feature, or product level
- Identify which customers are profitable vs burning budget

### Flexprice lets us focus on the core business instead of building billing as a second product.

**Shubhendu Shishir**  
Head of Engineering, Simplismart

### Multi SDK Support
Built to work with your favorite language, you can send usage events using our SDKs with no additional setup required.

### Seamless Integrations
Connect Flexprice with your stack using webhooks, APIs, and native integrations. Works with Stripe, Razorpay, Hubspot, Quickbooks, CRMs, and more.

## Frequently Asked Questions
- Does Flexprice support both usage-based and subscription billing?
- How do I bill for one-time or custom charges?
- Can customers see their charges before payment is processed?
- How does Flexprice handle credits, discounts, and proration?
- Can I track AI costs and profit margins per customer?
- What systems does Flexprice integrate with for billing and accounting?
- How quickly can I start generating invoices with Flexprice?

## Launch usage-based billing this week, not next quarter

### Explore AI Summary

## Talk with Founders
**Nikhil Mishra**  
Co-founder and CTO  
**Manish Choudhary**  
Co-founder and CEO  
**Koshima Satija**  
Co-founder and COO