What is ARR?
Annual Recurring Revenue (ARR) is the normalized amount of recurring revenue a subscriptionbased business expects to generate over a full year. It is calculated by taking the monthly recurring revenue (MRR) and multiplying it by 12, or by summing the contracted yearly value of all active subscriptions.
ARR gives executives a clear, forwardlooking view of revenue health, simplifies forecasting, and serves as a common metric across finance, sales, and product teams.
Why Allocate ARR Monthly?
- Cashflow planning: While ARR is an annual figure, businesses must manage cash on a monthbymonth basis. Monthly allocation translates the longterm promise into shortterm budgeting.
- Performance tracking: Comparing the monthly allocated amount against actual cash received highlights churn, upsell, or billing issues early.
- Goal alignment: Sales, marketing, and product teams often set monthly targets. A consistent ARR allocation ensures every department works toward the same revenue horizon.
- Investor reporting: Investors expect to see both annual runway and monthly burn. Showing how ARR is spread across months satisfies both views.
Allocation Methodology
There are three common approaches. Choose the one that matches your contract structure and reporting needs.
1. StraightLine Allocation
Divide the total ARR equally across the 12 months.
| Contract Value (ARR) | Monthly Allocation |
|---|---|
| $120,000 | $10,000 |
| $36,000 | $3,000 |
| $60,000 | $5,000 |
2. ProRata Based on Start/End Dates
When contracts start or end midyear, allocate only for the months they are active.
Example:- Contract A: $24,000 ARR, starts March 1.- Monthly allocation = $24,000 / 12 = $2,000.- Allocated months: MarchDecember $2,000 x 10 = $20,000 for the current year.
3. Weighted Allocation for Seasonality
If your business experiences predictable seasonal spikes, apply weighting factors.
| Month | Weight | Allocated % of ARR |
|---|---|---|
| JanMar | 0.07 | 7% |
| AprJun | 0.10 | 10% |
| JulSep | 0.12 | 12% |
| OctDec | 0.15 | 15% |
For a $120,000 ARR contract, the October allocation would be $120,000 0.15 = $18,000.
StepbyStep Calculation (StraightLine Example)
- Gather all active contracts and their ARR values.
- Sum the ARR to get Total ARR.
- Divide Total ARR by 12 = Base Monthly Allocation.
- Adjust for contracts that begin or end during the year (prorate).
- Apply any seasonal weights if required.
The result is a clear, monthbymonth revenue forecast that can be inserted into budgeting models, cashflow statements, and KPI dashboards.
Tools & Templates
Below are some quickstart resources you can copy into Excel or Google Sheets.
Simple Spreadsheet Template
- Create columns:
Contract ID, ARR, Start Date, End Date, Monthly Allocation. - Use this formula for straightline allocation:
=ARR/12. - For prorated months, add:
=IF(AND(MONTH($Date$)>=MONTH(StartDate),MONTH($Date$)<=MONTH(EndDate)),ARR/12,0). - Sum each months column to get the final Monthly ARR Allocation.
PowerBI / Looker Dashboard Sketch
- Data source: contracts table with fields ARR, start_date, end_date.
- Calculated field:
MonthlyARR = ARR/12. - Visual: stacked bar chart showing each contracts contribution per month.
- Filters: product line, region, sales rep.
Automation with Python (Pandas)
import pandas as pddf = pd.read_csv('contracts.csv') # columns: id, arr, start, enddf['monthly'] = df['arr']/12def allocate(row, month): start = pd.to_datetime(row['start']) end = pd.to_datetime(row['end']) cur = pd.Timestamp(year=2024, month=month, day=1) return row['monthly'] if start <= cur <= end else 0monthly_alloc = {m: df.apply(allocate, axis=1, month=m).sum() for m in range(1,13)}print(monthly_alloc) This script reads a contracts file, applies a straightline allocation, and returns a dictionary with the monthly totals.
Frequently Asked Questions
- Is ARR the same as MRR?
- No. MRR is the recurring revenue earned each month. ARR is the annualized version, usually calculated as
MRR 12. Some companies also include booked but not yet recognized revenue in ARR. - How do I handle nonrecurring professional services?
- Professional services are generally excluded from ARR because they are onetime. However, if you offer them under a renewable subscription, include them in the ARR calculation.
- What about discounts or promotional pricing?
- Use the contracted amount after discount. ARR reflects the actual revenue the customer is obligated to pay over the contract term.
- Do I need to adjust for churn each month?
- Yes. Subtract the ARR of contracts that churned before the month you are allocating for. This keeps the monthly forecast aligned with the live subscription base.
- Can I allocate ARR quarterly instead of monthly?
- Absolutely. Replace the divisor 12 with 4 and spread the amount across the three months of each quarter. The principle stays the same.
Putting It All Together
When you combine a clear definition of ARR, a consistent allocation method, and the right tools, you gain a reliable roadmap for cashflow management and strategic decisionmaking. Start with a simple straightline model, validate it against actual cash receipts, then layer in prorating and seasonality as your data matures. The end result is a transparent, actionable view of how your recurring revenue will sustain and grow the business throughout the year.
