---
title: Invoice Structure, Components & Calculations
description: "How members can pay: Card, Cash, ACH, and Free. Includes automatic billing, payment breakdowns, and security."
---
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1. [Fitness GM | Knowledgebase](https://blog.fitnessgm.com/en/fitness-gm-kb2026?hsLang=en)
2. [Billing](https://blog.fitnessgm.com/en/fitness-gm-kb2026/billing?hsLang=en)
3. [Payment Methods](https://blog.fitnessgm.com/en/fitness-gm-kb2026/billing?hsLang=en#payment-methods)
# Invoice Structure, Components & Calculations
## Payments include multiple components itemized for each transaction
### **Payment Components**
**1. Membership cost**
- Base cost for each pricing option
- Required for all paid memberships
**2. Sign-up fee**
- One-time fee on the first payment only
- Optional and configurable per membership
**3. Administrative fee**
- Optional charge to offset payment acceptance costs
- Applied to the total charge
- Percentage of total charge
- Flat amount added to the total charge
**4. Sales tax**
- Percentage based on your tax settings and location
- Applied automatically to the taxable subtotal
**5. Late fee**
- Optional cost for overdue payments
- Can be a fixed amount or a percentage
- Configured in your gym settings
**6. Enhancement fees**
- Examples: annual fees, locker rental, amenity access
- Can be monthly or yearly
- Configured universally or per membership
---
### **Payment Calculation Examples**
Example A: Standard monthly membership
- Membership cost: $50.00
- 6% Sales Tax: $3.00
- 3% Administrative Fee: $1.50
**Total charged:** **$54.50**
Example B: First payment with sign-up fee
- Membership cost: $50.00
- Sign-up fee: $25.00
**Subtotal: $75.00**
- 6% Sales Tax: $4.50
- 3% Administrative Fee: $2.25
**Total charged:** **$81.75**
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- [Billing](https://blog.fitnessgm.com/en/fitness-gm-kb2026/billing?hsLang=en#main-content)
- [Payment Methods](https://blog.fitnessgm.com/en/fitness-gm-kb2026/billing?hsLang=en#payment-methods)
- [Processing Failed Payments](https://blog.fitnessgm.com/en/fitness-gm-kb2026/billing?hsLang=en#processing-failed-payments)
- [Troubleshooting - Billing](https://blog.fitnessgm.com/en/fitness-gm-kb2026/billing?hsLang=en#troubleshooting-billing)
- [Inbox](https://blog.fitnessgm.com/en/fitness-gm-kb2026/inbox?hsLang=en#main-content)
- [Managing Inbox](https://blog.fitnessgm.com/en/fitness-gm-kb2026/inbox?hsLang=en#managing-inbox)
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