Independent forecast verification for HubSpot
Know how much of your HubSpot forecast to believe.
Quarterdeck independently checks your HubSpot forecast against your team's actual deal history, so you can see what held, what missed, and how much of this quarter's number you can defend.
Read-only. Free to start. Quarterdeck does not replace HubSpot and does not forecast for you. HubSpot makes the forecast. Quarterdeck independently checks whether it holds, read-only.
The problem
Forecasts look precise until you compare them with what actually happened.
A forecast category is a rep's judgement on a date. Close dates move, amounts shrink and deals go quiet while they still count toward the number. Nobody reviewing the quarter can see how much of it rests on evidence.
A precise number, an unknown basis
No record of how it held
Self-reported by design
How it works
Three steps from connection to a number you can defend.
01
Connect HubSpot
Read-only access. Quarterdeck reads your deals, owners and forecast categories. It cannot create, edit or delete anything in HubSpot.
02
Backtest your forecast
See how previous forecasts performed: what was open at the start of each quarter, what closed, what slipped, and what your team's real conversion has been.
03
Verify every week
Track whether the current forecast is holding up. Each deal is checked against the evidence in HubSpot, and every verdict is recorded with the date and the method that produced it.
Example report
What the verdict looks like.
Four figures, the reason for each, and a dated record that is graded when the quarter closes.
Forecast
$2.40M
Open Commit and Best case deals closing this quarter.
Quarterdeck confidence
62%
Share of the forecast amount whose deals show supporting evidence. Not a probability of closing.
Defendable
$1.49M
Deals with recent activity, a next step and a stable close date.
At risk
$0.91M
Questionable and unsupported deals. Defendable plus at risk equals the forecast.
| Deal | Amount | Forecast category | Quarterdeck view | Reason |
|---|---|---|---|---|
| Northwind Logistics, platform expansion | $420K | Commit | Unsupported | Close date pushed 3 times. No activity logged in 52 days. |
| Helio Health, 3-year agreement | $310K | Best case | Questionable | No next step recorded. In Proposal for 41 days. |
| Atlas Freight, new logo | $180K | Commit | Supported | Activity 4 days ago. Close date unchanged. Next step set. |
Verdict ledger, Q4 2026
| Date | Forecast | Confidence | Defendable | Recorded |
|---|---|---|---|---|
| Oct 7 | $2.40M | 62% | $1.49M | Verdict recorded |
| Nov 7 | $2.31M | 67% | $1.55M | Verdict recorded |
| Dec 31 | n/a | n/a | n/a | Actual closed-won: $1.72M |
Each row keeps its date and method version and is never rewritten. Illustrative sample, not customer data. See the method behind every figure.
Why Quarterdeck
HubSpot makes the forecast. Quarterdeck independently checks whether it holds.
HubSpot owns the forecast and your team owns the judgement. Quarterdeck sits outside both, reads the same deals, and reports what the evidence does and does not support.
What Quarterdeck does
- Measures how much of the forecast amount shows supporting evidence, deal by deal.
- Backtests how your pipeline has converted in recent quarters.
- Records a dated verdict every day and grades it when the quarter closes.
- Shows the facts, the rules that fired, and the verdict as separate things.
What Quarterdeck does not do
- It does not forecast for you or replace the number your team submits.
- It does not write to HubSpot. Access is read-only.
- It does not predict whether a deal will close. Confidence is not a probability.
- It does not use another customer's data, and it does not train on yours.
Who it is for
Built for teams where someone has to defend the number.
B2B SaaS revenue teams
Leaders who answer for the number
Head of RevOps
VP Sales
Pricing
Start with a free audit. Move to Pro when you want it continuous.
The free audit gives you the verdict, the backtest and the deal analysis. Pro adds weekly verification, forecast history and the verdict ledger.
Free forecast audit
Pro
FAQ
Straight answers.
What data does Quarterdeck read?
Deal records, owners, pipeline and stage metadata, and the dates and amounts HubSpot holds for those deals. Access is through HubSpot's read-only scopes. Quarterdeck cannot write to your portal. The security page lists every scope.
Is my data pooled with other customers?
No. Every workspace is isolated by tenant, and your data is never combined with another customer's. It is never used to train any model.
How is the confidence figure calculated?
It is the share of the forecast amount whose deals show supporting evidence in HubSpot. It is not a probability of closing. The rules and weights are fixed and published on the method page, and each verdict records the method version that produced it.
What if my history is short?
Quarterdeck says so. If there are too few closed deals to backtest, the backtest shows why it cannot draw conclusions instead of showing a number. Close-date and amount history exist only from your first sync, and the audit labels that.
Run your free forecast audit.
Read-only access to HubSpot. Every figure comes with the reason to believe it. Nothing is written back.