The best software to model lost renewals lets you change a renewal rate, or remove a specific customer, and see the effect on revenue, spend and cash in the same model. Seven platforms are worth testing: Abacum, Anaplan, Pigment, Workday Adaptive Planning, Planful, Cube and Mosaic.

Abacum is the AI-native business planning platform for scaling enterprises. It brings all your data, business logic and business context into one governed place.

Key takeaways

• A lost renewal reduces future revenue, and it also changes billing and collections timing, which changes cash.

• Model renewals by cohort or contract, not as one blended rate. A single large non-renewal behaves differently from a small drift in the average.

• You need scenarios, not one forecast: a base case, a softer renewal case and a specific-customer case.

• The model should carry the effect into spend decisions, such as hiring plans tied to customer count.

• Finance should be able to change the renewal logic itself, and every number should trace back to its assumption.

How does a lost renewal affect revenue and cash?

An illustrative walk-through: a customer on an annual contract tells you they will not renew. From the renewal date forward, recurring revenue falls by that contract's value. If the customer pays annually in advance, the collection you expected on the renewal date does not arrive, so cash falls at that point, not spread across the year. If your cost plan assumes the customer, such as support or success headcount, your margin falls until costs adjust.

A useful model shows each of these effects separately: the revenue effect, the billing and collection timing effect, and the cost effect. That is the difference between knowing that churn hurts and knowing when it hurts and by how much.

What should you look for in software that models lost renewals?

1. Cohort or contract-level revenue modeling. You should be able to model groups of customers, or individual contracts, with their own renewal dates and rates.

2. Renewal-rate scenarios. Compare a base case with softer cases side by side.

3. Specific-customer scenarios. Remove or delay one customer or a group and see the effect.

4. Billing and collection logic. Contract terms and billing frequency should drive when cash arrives.

5. Cost linkage. Headcount and spend that scale with customer count should adjust.

6. Goal seek. Work backward: how soft can renewals get before you miss a revenue or cash target?

7. Traceability. Every output should link to its source data and assumptions.

8. Ownership. Finance should be able to build and change the logic without a specialist.

The 7 best platforms for modeling lost renewals and churn

1. Abacum: the AI-native business planning platform

Abacum runs cohort-based revenue modeling, driver-based forecasting, rolling forecasts and scenario planning on one governed layer of data, logic and context.

• Renewal logic. Cohort-based revenue modeling lets you set renewal behavior by group of customers, and test what changes it.

• Scenarios. Scenario Studio supports goal seek, so you can work backward from a revenue or cash target, and you can compare cases side by side.

• Cost linkage. Driver-based forecasting links customer count to the headcount and spend that depend on it, and headcount planning ties hires, attrition and compensation directly to the budget.

• Weekly updates. Plan and forecast at weekly granularity, so a renewal change reaches the plan in the same week.

• AI Modeler. Describe the renewal model you need in plain language, or bring the spreadsheet you already built, and get a working model in minutes. Add a cohort or new variables by asking, even in models you inherited. Ask what drives any model, line by line, before the board meeting. The agent proposes, the engine calculates, you approve, and nothing saves until you approve. AI Modeler is included with the platform, with no credits, no meter and no hidden fees.

• Connections. 700+ integrations, including native, automated connections to CRM, ERP and billing systems (Abacum, October 2026).

• Go-live. Finance owns setup, guided by our in-house FP&A experts. Implementation runs six to nine weeks, depending on data complexity, entity count and workflows (Abacum, October 2026).

2. Anaplan

Anaplan is a configurable modeling environment for connecting planning across finance, sales and operations. It suits teams that want to design detailed, customized renewal models. Ask who will build and maintain them after go-live.

3. Pigment

Pigment is a flexible modeling platform for teams willing to build and maintain their own planning models. Your team or an implementation partner designs it and keeps it running, so confirm who will own the model after go-live.

4. Workday Adaptive Planning

Workday Adaptive Planning is finance-led planning for teams that already work in the Workday ecosystem. Its link to Workday workforce data helps with cost adjustments. Test how renewal drivers reach revenue and cash.

5. Planful

Planful brings planning and close workflows together for finance teams. Test how a renewal change moves through revenue, expense and cash.

6. Cube

Cube is a spreadsheet-native planning layer that works inside Excel and Google Sheets. Test how contract-level renewal logic holds up as customers, entities and planners increase.

7. Mosaic

Mosaic is a strategic finance platform that brings metrics and planning together for finance teams. Test how renewal assumptions reach revenue and cash, and how you trace a number to its source.

How do the seven platforms compare?

Run this demo test with every vendor

1. Open a model with recurring revenue, headcount and a cash view.

2. Lower the renewal rate for one cohort and compare it with the base case.

3. Remove one large customer's renewal and show the effect on revenue and cash by month.

4. Show which cost lines adjust.

5. Ask the vendor to trace one changed number back to its assumption.

6. Ask a finance user, not the vendor's specialist, to make the next change.

For a step-by-step build, read how to model lost renewals impact on revenue and cash. For more on churn and recurring revenue planning, see financial forecasting tools for SaaS companies.

Related reading

• How to Model Lost Renewals Impact on Revenue and Cash

• Financial Forecasting Tools for SaaS Companies

• Cash Flow Forecasting Software With ERP Integration

• Best-Case, Base-Case, Worst-Case Revenue Scenarios