How to say “Politically express inability to act” professionally

Level 1: Given our current project priorities and my existing commitments, taking on this additional task would unfortunately exceed my capacity without impacting critical deadlines. Could we discuss how this new request aligns with our top objectives?

Level 2: I appreciate you considering me for this, but my focus is currently dedicated to [Project X] and [Project Y], both of which are high-priority. To ensure those deliverables are met, we might need to explore alternative resources for this new item or reprioritize the current workload.

Level 3: Per the latest quarterly planning documentation and the established RACI matrix, this particular initiative appears to fall outside my primary accountabilities. Should there be a formal re-scoping or re-allocation of resources, I'd be happy to review the updated parameters for potential involvement.

Level 4: I cannot take on this task. My current bandwidth is fully allocated to [list critical projects]. Adding this would directly jeopardize the completion of those essential deliverables, leading to delays and potential penalties.

Level 5: Not my problem.

Level 1: Thank you for this request. We will need to assess how this new requirement aligns with our current Statement of Work and project timeline. Our team will get back to you with an updated proposal.

Level 2: We understand the importance of this new feature. To ensure we maintain the integrity of our existing commitments, we'll need to formally scope this additional work. This may involve a review of the project plan and associated timelines.

Level 3: While we appreciate your continuous ideation, this particular request appears to represent a significant deviation from the agreed-upon deliverables outlined in Appendix C of our Master Service Agreement. Any adjustments would necessitate a formal change request, leading to a revised scope and potentially impacting the current budget and timeline.

Level 4: This request falls outside the agreed-upon scope of our current contract. Implementing it would require a new Statement of Work, which will incur additional costs and extend the project timeline. We can initiate that process if you wish to proceed.

Level 5: Read the contract.

Level 1: I appreciate you thinking of me, but my current focus is entirely on [Project A] and [Task B]. I wouldn't be able to give your request the attention it deserves at this time.

Level 2: That sounds like an interesting challenge. While I'm currently fully allocated with [my own tasks], have you considered checking with [Team Member X] or perhaps looking at the [team's resource planning tool] for available capacity?

Level 3: Per our last sprint planning session, my current story points are fully assigned to items directly contributing to [Our Team's OKR]. Perhaps this item could be formally added to the backlog for prioritization by the product owner in a future iteration?

Level 4: I cannot assist with this. My workload is already at maximum capacity, and I need to prioritize my assigned deliverables. You'll need to find another resource.

Level 5: Figure it out.