Description
WooCommerce Plugin
WC Advanced Subscription Proration
Advanced proration logic for WooCommerce Subscriptions. Fixes February billing errors, downgrade wallet credits, transparent upgrade simulator, pause with maintenance fee, and synchronized renewal dates. Solve complex billing scenarios that cost you revenue.
Precision Calculator
Downgrade Wallet
Upgrade Simulator
Date Alignment
Stop losing revenue to billing math errors
WooCommerce Subscriptions calculates proration using 30-day months—causing accounting errors in February (28/29 days) and 31-day months. Downgrades extend dates instead of issuing credits, breaking synchronized billing. Upgrades confuse customers who don’t understand the charges. WC Advanced Proration fixes all of this.
Precision Calculator
Exact day proration (28, 29, 30, 31) not 30-day averages. Eliminates February errors.
Downgrade Wallet
Store credit instead of date extension. Keeps billing cycles synchronized.
Upgrade Simulator
Shows customers upgrade cost breakdown. Reduces “why was I charged?” tickets.
Pause with Fee
Charge maintenance fee during pause. Cover data retention costs.
Date Alignment
Force renewals to specific day. Perfect for subscription boxes.
The February problem costs you money
WooCommerce Subscriptions uses 30-day math for proration. February has 28 days (29 in leap years). 31-day months have 31 days. Every proration calculation in these months is wrong—costing you revenue or overcharging customers. This adds up across hundreds or thousands of subscriptions.
Default WooCommerce: 30-day average
Customer signs up Feb 15 for $60/month. Proration: $60 ÷ 30 days × 13 days = $26.00. But February has 28 days! Correct: $60 ÷ 28 × 13 = $27.86. You lost $1.86.
Precision Calculator: Exact days
Detects February (28 days), leap years (29 days), 31-day months. Calculates: $60 ÷ 28 × 13 = $27.86. Accurate proration every time. No revenue loss.
Scales with volume
$1.86 × 500 February prorations = $930 lost revenue per year. Precision Calculator eliminates this completely. Pays for itself immediately.
📊 Proration Calculation Comparison
Default WooCommerce (WRONG)
February: $60 ÷ 30 days × 13 remaining = $26.00
Should be: $60 ÷ 28 days × 13 remaining = $27.86
Lost revenue: $1.86 per proration
Precision Calculator (CORRECT)
Detects: 28 days in February
Calculates: $60 ÷ 28 days × 13 remaining = $27.86
Result: Accurate billing, zero revenue loss
Annual Impact
500 February prorations: $1.86 × 500 = $930 lost
With Precision Calculator: $0 lost
ROI: Instant payback
Five modules solve complex billing scenarios
Each module solves a specific billing problem that costs you revenue, creates support tickets, or breaks your business logic. Enable the ones you need.
Module 1: Precision Calculator
Calculates proration based on exact days in month (28, 29, 30, 31) not 30-day averages. Eliminates February accounting errors. Shows proration details in admin column.
Module 2: Downgrade Wallet
Converts unused value to store credit instead of extending subscription dates. Keeps billing cycles synchronized. Custom wallet database table tracks credits per user.
Module 3: Upgrade Simulator
Shows customers upgrade cost breakdown before checkout. “You used 12 days ($20). You have $10 credit. Upgrading costs $40 today.” Reduces confusion and support tickets.
Module 4: Pause with Fee
Charge maintenance fee during subscription pause. Default $5/month to cover data retention costs. Essential for SaaS platforms where paused users still consume resources.
Module 5: Date Alignment
Force all renewals to specific day of month (e.g., always bill on 1st). Perfect for subscription boxes that ship on same day monthly. Simplified logistics and accounting.
Enable What You Need
Each module toggleable in settings. Use all five or just the ones that solve your specific billing problems. Works alongside WooCommerce Subscriptions without conflicts.
💰 Downgrade Wallet Example
Problem: Customer on $60/month Gold plan downgrades to $30/month Silver after 15 days used.
Default WooCommerce: Extends subscription by 15 days
Issue: Breaks synchronized billing cycle
Downgrade Wallet: Issues $30 store credit
Next renewal: $30 plan – $30 credit = $0 due
Result: Billing date stays on 1st of month
📈 Upgrade Simulator Preview
Before checkout, customer sees:
Upgrade Preview: You have used 12 days of Silver ($12). You have $18 credit. Upgrading to Gold ($60) will cost $42 today.
Result: Customer understands the charge. Zero “why was I charged?” support tickets.
⏸️ Pause with Fee Use Case
Scenario: SaaS customer pauses for summer vacation (3 months)
Without Pause Fee:
$60/month × 0 months = $0 revenue
Data storage costs: $15 (3 months)
Loss: $15
With Pause Fee ($5/month):
Maintenance fee: $5 × 3 = $15 revenue
Data storage costs: $15
Break even: Zero loss
📅 Date Alignment for Subscription Boxes
Problem: Ship 500 boxes monthly but renewals scattered across 30 days
Without Alignment: Pack and ship orders daily. Logistics nightmare. High shipping costs.
With Alignment (15th): All 500 renewals on 15th. Batch packing on 14th. One shipping day. 40% lower shipping costs.
Perfect for subscription businesses
SaaS platforms, subscription boxes, membership sites, online courses, physical product subscriptions. Any WooCommerce store using subscriptions with complex billing needs.
SaaS Platforms
Pause with maintenance fee covers server costs. Precision calculator ensures accurate prorations. Upgrade simulator reduces confusion about mid-cycle upgrades.
Subscription Boxes
Date alignment synchronizes all renewals to same shipping day. Batch processing, lower shipping costs. Downgrade wallet keeps billing cycles aligned.
Membership Sites
Precise proration for mid-month signups. Downgrade wallet for plan changes. Upgrade simulator shows exact upgrade costs to increase conversions.
Frequently asked questions
Does this work with WooCommerce Subscriptions?
Yes, it requires WooCommerce Subscriptions. It enhances the default proration logic without replacing core functionality. Works alongside Subscriptions without conflicts.
How does precision calculator fix February errors?
Default WooCommerce uses 30-day average. Precision Calculator detects exact days in current month (28, 29, 30, 31) and calculates: $amount ÷ exact_days × remaining_days. Eliminates revenue loss.
What is downgrade wallet?
When customers downgrade, unused value converts to store credit instead of extending subscription date. Keeps billing cycles synchronized. Custom database table tracks credits per user.
Can I use only some modules?
Yes! Each module has enable/disable toggle in settings. Use precision calculator only, or all five modules, or any combination. Completely flexible.
How does upgrade simulator reduce support tickets?
Shows customers: “You used 12 days ($20). You have $10 credit. Upgrading costs $42 today.” Transparent math before checkout eliminates “why was I charged?” confusion.
What is pause with maintenance fee?
Charges configurable monthly fee (default $5) during subscription pause. Essential for SaaS where paused users still consume server resources. Covers data retention costs.
How does date alignment work?
Forces all renewals to specific day of month (e.g., always 1st or 15th). Perfect for subscription boxes that ship on same day. Synchronized logistics and accounting.
Does it work with existing subscriptions?
Yes! Applies to all subscriptions immediately after activation. Existing subscriptions benefit from precision calculator. Wallet credits tracked going forward. Date alignment applies at next renewal.
Technical requirements
WordPress
6.0 or higher
PHP
8.2 or higher
WooCommerce
Latest version
WC Subscriptions
Latest version
