Templates Onboard every bookkeeping client the same clean way, every time. TaxSeason Flow is a white-label client onboarding kit for solo bookkeepers, CPAs, and fractional controllers: a 12-page Client Welcome & Rules Handbook (PDF + editable Word), a 40-question intake questionnaire, a 17-item engagement checklist, 10 copy-paste client chase email scripts, a 7-stage multi-client onboarding tracker spreadsheet, and a QuickBooks Online batch-import kit with 6 pre-formatted CSV templates, filled samples, and a mapping & validation guide.