Campaign Budget Close: Spend, Return and Agency Fees That Add Up Each Month

Spend in one tool, plan in another, return in a third

Closing a month of campaign spend means answering three questions for every campaign: did it spend what the plan said, what did it return in closed deals, and is the agency invoice right for it. Then next month's budget is allocated, ranked by return, under a cap finance sets. Every one of those answers depends on numbers that are still moving when the month closes.

The plan sits in Airtable, paid spend in Meta Ads, email results in Mailchimp, closed deals and their campaign attribution in HubSpot, and the agency agreement and invoices in Google Drive. A late deal shifts one campaign's return. A change to the attribution window shifts all of them. A disputed invoice line comes back as a credit two weeks later, after the totals already went to finance.

Who works in the room

Marketing operations and finance share one Kylon room for the monthly close. Myco is the default agent, so a question about a campaign's variance or return goes to it. Ada owns the agency invoice, and Fin owns the channel notes and anything addressed to the agency. When Ada removes an invoice line, it mentions Fin with the line and the reason, and Fin drafts the note to the agency for the marketing operations manager to send. Meta Ads is read-only for agents in this room, and the agency changes budgets in the ad account once the allocation is approved.

Closing the month, campaign by campaign

The variance thresholds, the allocation rules and the cap sit in the room guidelines. Finance has the last word on every figure that turns into money.

The attribution window moves after the numbers went out

A change to the attribution window looks like a reporting tweak and touches every campaign. Myco recomputes return for every campaign that has ever had a HubSpot deal attributed to it, including the ones whose return falls to zero under the new window, because those are the ones a ranked allocation quietly drops. The allocation is then proposed again and finance approves it again.

Late reassessments and credits work the same way. A deal that closes after the cut-off moves one campaign's return, and Myco re-ranks only what that change touches. When the agency issues a credit for a disputed line, Ada re-checks the approved list: removed lines stay removed, unchanged lines stay approved, and every total is summed from the listed lines, never typed in beside them.

What the checks catch

• A channel total that does not equal the sum of the campaigns listed under it
• A campaign whose return drops to zero under a new window and falls out of the recompute
• An approved invoice list that drops unchanged lines along with the removed ones
• A major underspend with no carried-forward amount
• An on-target campaign listed among the variances

What stays with people

• Approving next month's allocation and every agency invoice line
• Choosing the attribution window
• Sending notes to the agency, which Fin prepares as Gmail drafts
• Changing budgets in Meta Ads, which the agency does once finance approves the allocation

Integrations in this workflow

Kylon is not a marketing analytics tool and it does not replace one. It sits across the ad account, the CRM, the email tool and the plan, and keeps the month's coordination in one room.

• Airtable
• Gmail
• Google Drive
• HubSpot
• Mailchimp
• Meta Ads
• Slack

• Airtable holds the campaign plan, variance classes, the allocation and the channel notes
• Meta Ads is read for spend and delivery per campaign, and agents do not change budgets there
• HubSpot holds closed deals and the campaigns they are attributed to
• Mailchimp holds the email campaigns whose results feed the email channel note
• Google Drive keeps the agency agreement, the invoices and the budget rules
• Gmail carries the agency thread, with notes drafted for a person to send
• Slack is where the paid social lead and the agency post campaign changes

Where to start

Start with one month and the paid social channel. Connect the Airtable plan and the Meta Ads account, and write one rule in the room guidelines: every total is the sum of the campaigns listed under it, and finance approves the allocation before anyone touches a budget.

“A ranked list is only fair if every campaign that ever earned a deal is on it.”

Set it up with your agent

Open a new Room, add your agent and paste this prompt. It connects the tools, builds the App with you and asks for your rules one step at a time, and nothing goes out until a person approves it.