Protect the recurring promise
Define service categories, capacity, request rules, response expectations, rollover, overages, billing, and renewal.
What is the best agency software for retainers and projects?
Compare agency software for recurring retainers and fixed projects by scope, requests, capacity, time, approvals, billing, profitability, and renewal.
The best system keeps recurring service and project work distinct under one client.
Stelaah is a strong candidate when agencies need retainers, projects, client requests, approvals, documents, invoices, portals, and relationship history together. Scoro and Productive fit agencies prioritizing resource, budget, utilization, forecast, and profitability controls. ManyRequests fits productized or subscription agencies centered on recurring request queues and billing.
Preserve the fixed baseline
Connect deliverables, milestones, dependencies, changes, acceptance, costs, invoices, and closeout.
See the combined demand
Plan people and skills across retainers, projects, pipeline, leave, urgent work, and protected buffer.
Test both commercial models in the same month.
Software that handles one model well may still hide conflicts when recurring requests and fixed project milestones compete for the same people.
Create one retainer agreement
Record the term, included service, monthly capacity or deliverables, request channel, priority rules, overages, billing, renewal, and exit terms.
Create one fixed project
Record accepted scope, phases, owners, effort, external costs, dates, client dependencies, approvals, invoice milestones, and change control.
Plan shared capacity
Add both engagements, qualified pipeline, leave, internal work, urgent requests, review load, and a specialist bottleneck.
Close the month
Reconcile completed work, request usage, project progress, time, costs, invoices, payment, margin, client communication, and renewal actions.
Score the workflow before scoring the interface.
Use the same evidence and acceptance test for every shortlisted product.
Commercial separationCompare a retainer request with a project change. The system should apply the correct scope and billing rule to each.
Shared capacityOverbook one specialist across both models. Tradeoffs should be visible before dates or service levels are missed.
Evidence and billingTrace monthly and milestone charges. Invoices should connect to the correct agreement, work, approval, and period.
Renewal contextReview the retainer after a difficult project. Relationship health should include delivery, economics, decisions, risks, and open obligations across both models.
Example: a content agency with six retainers and two website projects
Recurring clients submit weekly requests while two fixed website launches require the same strategist and designer. One retainer also asks for work outside its included service.
The best platform classifies the request correctly, exposes the capacity conflict, records the scope decision, protects fixed project dates, bills each model from the right evidence, and carries the result into renewal planning.
A practical shortlist by operating model.
Confirm current capabilities, limits, regional availability, pricing, and implementation requirements with each provider before purchasing.
StelaahConsider when retainers, projects, requests, approvals, documents, capacity, invoices, portals, and client history should remain connected.
ScoroConsider when retainers, quoting, projects, resources, time, costs, invoicing, and professional services reporting need one formal model.
ProductiveConsider when budgets, resource planning, time, utilization, forecasting, invoicing, and profitability across recurring and project work are central.
ManyRequestsConsider when productized recurring services need branded requests, queues, proofing, time, subscriptions, invoicing, CRM, and client reporting.
Product facts checked against Stelaah product reference and Scoro professional services automation and Productive agency management and ManyRequests agency portal on 2026-08-12.
Move from the question to an evidence-based trial.
Continue through the category definition, a practical planning tool, and the closest product or operating workflow.
What is the best agency software for retainers and projects?, answered.
Should retainer requests and project tasks share one board?
They can share portfolio visibility, but their scope, priority, capacity, billing, and acceptance rules should remain explicit.
How should out-of-scope retainer work be handled?
Classify the request, estimate impact, present the tradeoff or change, obtain authority, and preserve the decision before work continues.
What should a monthly retainer review include?
Review included work, completed evidence, usage, open requests, capacity, exceptions, client health, invoice and payment state, risks, and next-period priorities.
Test the complete client thread.
Use one representative engagement and one difficult exception before committing the business.