December in financial services is a natural opening for client communication. Year-end brings tax planning opportunities, portfolio rebalancing decisions, required minimum distributions, and the general sense of people taking stock of where they are financially.
Most firms handle year-end communication as a bulk email, a market recap, a year-in-review message, a happy holidays note. These are fine. Most clients read them once and forget them.
What's actually useful in December
Tax-loss harvesting windows. For calendar-year planning, a loss generally has to be realized within the tax year, but account type, wash-sale rules, and trade timing matter. A position with an unrealized loss is a reason for account-specific review, not an automatic instruction to sell. The IRS explains capital gains, losses, and wash sales in Publication 550.
RMD reminders for clients who need to take distributions. Most recurring RMDs are due by December 31, but first-year and plan-specific rules can differ. The IRS RMD FAQ is the source to check before sending a deadline reminder.
Annual gifting. The federal gift-tax annual exclusion is based on the year of the completed gift, and transfer timing can matter. The IRS gift-tax FAQ gives the current exclusion amount; estate and tax counsel should confirm how it applies to the client's transfer.
Contribution limits. IRA and HSA contributions are generally due by the unextended federal income-tax filing deadline, not permanently on April 15. The exact date and exceptions can change. Confirm them against IRS Publication 590-A for IRAs and Publication 969 for HSAs.
The approach
Each communication is relevant only to clients whose situation and applicable deadline have been verified. Segmenting by relevance makes the message more useful; measure replies and meetings rather than assuming a response-rate lift.
A relevant, accurate reminder gives the client a reason to respond. Measure whether each segment produces useful replies or meetings rather than assuming personalization guarantees either one.
Build notes: segment first, then schedule
A year-end message works when it matches what the client actually needs to do. Split the list into a few groups using data you already have: clients with pending documents, clients with a deadline coming up, clients with nothing outstanding, and clients who have not been contacted in a long time. Each group gets a different message, and the last two groups usually get the shortest.
Set a calendar that avoids the last week of December, when most emails go unread, and build a hard cutoff date for anything that needs a reply before year end. Each message should carry one action and one date. If a client acts, the system should stop reminding them at once, so nobody who already sent their documents gets a second nudge.
Have the person who owns the relationship read the drafts for their top clients. Automation can assemble the details, such as an open item or a deadline, but a short personal line from the advisor or accountant is what separates it from a mass mailing. After the season, record how many clients in each group responded and use that to adjust the groups next year.
