How to build a business case for a new partnership

Why partnerships need a business case

Most internal pitches for a new partnership fail the same way. The partnership lead walks in with a logo, a vision slide, and a request for CRM integration, joint marketing, and enablement across the sales team. Sales leadership hears "give me your team's attention for a partner we haven't proven yet" — and politely declines.

A business case flips the ask. Instead of enthusiasm, you bring account evidence. Instead of a big commitment, you ask for a scoped pilot with a defined end. Instead of "trust me," you present success criteria the room can agree on in advance.

This guide gives you the template and an example. Use it before you request a single seller's time.

The nine-section template

1. Partnership hypothesis

One paragraph. Shared buyer, joint value proposition, the motion you want to test (co-sell / co-market / referral / resell), and the reason this partner over any other. If you can't fit it in a paragraph, the hypothesis isn't sharp enough yet.

2. Account evidence

The single most important section. Present the output of a private account mapping session:

• N shared accounts between our lists.
• X of them are current customers on our side that the partner sells into (expansion opportunity).
• Y of them are open opportunities on our side where the partner is already a trusted vendor (co-sell opportunity).
• Z of them are strategic logos on our target list that the partner has an active relationship with (warm intro opportunity).

Redact account names if needed. What matters is that these numbers are real, not projected. See how to validate a B2B partnership before investing in it for how to generate them.

3. Commercial opportunity

Translate the evidence into a range. Use conservative math and disclose assumptions:

• Expected pilot outcomes (opportunities, meetings, or influenced pipeline).
• Expected uplift on win rate or deal size vs. a solo baseline, if the pilot succeeds.
• The realistic 12-month ceiling if the motion works and you scale to the full shared-account list.

Don't invent precision. A range with disclosed assumptions is more credible than a single number that pretends to be forecast.

4. Required participants

Name the specific people — not teams — you need in the pilot:

• 2–4 account executives whose accounts appear on the shared list.
• 1 sales leader as sponsor.
• 1 marketing contact for optional joint content.
• 1 executive sponsor (usually the CRO).

No partner portal team, no RevOps integration work, no legal review of a full partnership agreement at this stage. That's the point.

5. Resource request

Be explicit. What you are asking for:

• ~30 minutes/week from each named AE for 60 days.
• One 60-minute joint enablement session.
• Sponsor's cover for the AEs' time in front of their line manager.

What you are not asking for yet:

• CRM integration.
• Broad enablement across the whole sales team.
• Joint marketing budget.
• Technical or support integration work.
• Legal review of a full partnership agreement (mutual NDA is enough for the pilot).

Naming what you're not asking for is what makes the pitch easy to approve.

6. 60-day pilot plan

A simple timeline:

• Week 1: kickoff, joint enablement, prioritize 3–10 accounts, name owners on each side.
• Weeks 2–4: first joint meetings on priority accounts.
• Weeks 5–8: deepen active opportunities, add joint content if a real deal needs it.
• Day 60: review.

7. Success criteria

Agreed before the pilot starts. Realistic examples:

• At least 3 documented joint opportunities from the priority accounts.
• At least 1 late-stage opportunity accelerated by the partner (meeting booked, exec intro made, technical validation delivered).
• Sellers involved rate the motion as worth continuing.
• Deal size or win rate trending better than a solo baseline (small sample, treated as a signal not proof).

8. Expansion decision

Spell out the three outcomes at day 60:

• Expand: move to CRM integration planning, broader enablement, more partners on the same motion. See when should partners integrate their CRMs?.
• Reshape: the overlap is real but the motion needs adjustment; run another 60 days on a revised plan.
• Stop: no traction after honest execution; redirect capacity.

9. Risks and mitigations

Two or three honest risks. Common ones: AE bandwidth, partner disengagement, data-sharing concerns. For each, the mitigation you've planned.

Example internal pitch

The numbers below are illustrative — replace with your own from the mapping session.

Partnership: OnlyCommon × [Partner] Hypothesis: Mid-market RevOps buyers who use [Partner] also need account mapping. We can co-sell into their existing base and win larger deals faster than either of us alone. Account evidence: 62 shared accounts. 18 are current [Partner] customers on our target list. 9 are open opportunities on our side where [Partner] has an active relationship. 4 are strategic logos we've been unable to reach. Commercial opportunity: In a 60-day pilot on 8 priority accounts, we expect 2–4 joint opportunities and 1–2 warm intros into strategic logos. If the motion works, the full 62-account list represents an estimated $X–Y in influenced pipeline over 12 months (assumes historical mid-market ACV, no discount for co-sell). Required participants: 3 named AEs, 1 sales leader as sponsor, 1 marketing contact (optional), CRO as executive sponsor. Ask: ~30 min/week from each AE for 60 days; one 60-minute joint enablement. No CRM integration, no joint marketing budget, no full partnership agreement at this stage. Success criteria (day 60): ≥3 documented joint opportunities; ≥1 accelerated opportunity; positive AE feedback; win rate or deal size trending better than solo baseline on the pilot accounts. Expansion decision: if criteria met, propose CRM integration scope, additional partners on the same motion, and a marketing plan for Q+1.

How this changes the internal conversation

A partnership pitch grounded in this template is small enough to approve, specific enough to execute, and honest enough to earn trust for the next ask. The organization spends its scarce attention on partnerships that have already produced evidence — instead of on the ones with the best-looking slide.

OnlyCommon gives you the account evidence for section 2 in minutes. Upload a CSV, invite any partner by link, and get a private shared-account list to bring into the meeting. Map a partner free.

FAQ

Who signs off on the pilot? Typically the CRO or the VP of Sales, because they're being asked for AE time. The CFO isn't usually involved until the expansion decision.

Do I need forecast-quality numbers in the commercial opportunity? No. A range with disclosed assumptions is what's expected. Precision at this stage undermines credibility.

Can I skip the pilot and go straight to integration? You can — but you'll be spending significant RevOps, IT, and legal capacity on a partnership without evidence yet. The whole point of the pilot is to earn the right to that spend.