Use recurring-revenue and subscription data for different views
Sales Hub or Service Hub Enterprise accounts can use special recurring-revenue Deal properties for amount, type, inactive date, and inactive reason. These support concepts such as new revenue, renewal, upgrade, downgrade, and churn, along with reports on new, existing, and lost recurring revenue.
Those Deal reports depend on values your organization maintains. They do not calculate recurring revenue automatically from associated products or quotes.
HubSpot-billed subscriptions provide another source. Subscription records can surface MRR, ARR, active and scheduled subscriptions, unpaid or paused subscriptions, cancellations, expirations, billing frequencies, next billing dates, end dates, and churn dates.
If recurring donations are processed elsewhere, the relevant subscription, cancellation, failure, and end-date information must be synced into HubSpot before it can support a reliable forecast.
Estimate unnamed future revenue from historical patterns
Not every likely dollar will appear as an open Deal. Several years of campaign performance can support portfolio-level estimates for year-end giving, Giving Tuesday, gala revenue, membership and grant renewals, recurring-donor retention, gift increases, first-time donor conversion, program registration, and lapsed-donor reactivation.
Document which years were used, unusual years excluded, inflation assumptions, audience or investment changes, large one-time gifts, and external conditions. Without that context, a historical average can look more reliable than it is.