Prepare your forecast with an AI agent

Have a Tessly account and a separate practice model ready. Sign in yourself using the Open Tessly link. Prepare your currency, forecast start date, revenue, costs, team and cash. This walkthrough uses the SaaS B2B template and an already-revenue-generating business; other business models show different fields.

Northstar Notes is a fictional B2B subscription business. Every number below is a teaching assumption, not a benchmark or a recommendation. Use a separate practice model; replace these values before making business decisions.

Operating currency

USD

Current monthly subscription revenue

10,000

Current paid company customers

100

Monthly new paid company customers

10

Monthly paid-company retention

98%

Monthly non-headcount OpEx, excluding marketing

2,000

Monthly non-headcount marketing

500

Team / monthly base salary per person

2 people / 3,000

Current cash

100,000

Check the units: 10,000 ÷ 100 = USD 100 per customer per month. Non-headcount spend is (2,000 + 500) × 12 = USD 30,000 per year, excluding payroll. Base salaries total USD 6,000 per month before employer costs. Retention of 98% means 2% churn for the same monthly cohort; do not enter 2 in a retention field. These checks do not predict the final forecast, which also depends on timing, costs and other assumptions.

1. 01

   Collect the source information

   Use the Northstar Notes example below, or gather your business notes, pricing, customer counts, monthly costs and cash balance. Share only the information you intend to give your chosen AI provider. Mark estimates and missing values clearly.

2. 02

   Give the agent the actual field names

   Open the model and list the field labels you need to fill. For this example, use the subscription revenue and paid-company customer fields in the manual tutorial. Include each field’s currency, unit and period so the agent does not confuse annual revenue with monthly revenue.

3. 03

   Request an input checklist

   Use the prompt below. Ask for one row per input, with its value, unit, period, source and status: supplied, derived, estimated or missing. The agent should ask about gaps instead of turning guesses into facts.

4. 04

   Review, then paste one value at a time

   Check every row against your source. Copy only the value into the corresponding Tessly field; use plain numbers such as 10000 rather than a sentence or an entire table. This is field-by-field copy and paste, not a bulk import. Follow the manual tutorial for the remaining steps.

5. 05

   Check the model and keep the assumptions

   Compare the completed inputs with your checklist, including any defaults that remain. Generate the forecast after reviewing required inputs. Keep the source checklist with your working notes so you can explain what changed later.

See the field-by-field manual tutorial →

Select the prompt text and copy it. Replace the bracketed placeholders before using it.

• The intended model and operating currency match your checklist.
• Subscription baseline shows 100 customers and USD 10,000 monthly revenue; derived average is USD 100.
• New customers and retention are monthly inputs; retention is 98, not 0.98 or 2, in the percent field.
• Non-headcount costs and marketing are separate; salaries are not counted twice.
• Starting cash is USD 100,000; future funding, delivery costs, employer costs and dates have been reviewed.
• The model has no unexplained missing inputs. Review results and remaining defaults before saving or sharing.