Everything you need to know about Maintenance TMS: How to Hold On to the Gains — how it works, what it costs, and how to find a provider who actually knows what they're doing.
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Everything to know before your first consult — questions to ask, what to expect, and how to compare providers.
You finished the course. You feel better. The hard part is supposed to be over. And then, somewhere between three and nine months later, the slow drift starts: sleep gets worse, the morning dread creeps back, the things you’d rebuilt — exercise, social contact, work focus — start slipping. This is the thing nobody warns you about loudly enough at the end of an acute course: TMS isn’t a vaccination, and depression doesn’t get cured in 6 weeks.
The good news is that the approach many clinics use is straightforward. The caveat is that the evidence base for specific maintenance schedules is still limited, and insurance coverage is inconsistent. The bad news is that almost no one explains it on day one, so people end up rediscovering it after a relapse instead of preventing one.
Here’s the practical guide to maintenance TMS.
How Long Does a Single TMS Course Hold?
The honest answer, pulled from the durability literature:
- In a large naturalistic follow-up study, about 62.5% of patients who responded or remitted after the acute course still met response criteria through 12 months (Dunner et al., 2014). A substantial minority lost response during that time, and about 36% of patients in the study received additional TMS during follow-up.
- Durability data beyond one to two years is more limited, and maintenance schedules have not been standardized or rigorously compared.
Three Common Maintenance Strategies
There isn’t one universal protocol; clinics use one of three approaches depending on your trajectory.
1. Scheduled Maintenance Sessions
A pre-set schedule of single sessions, regardless of how you’re doing. Common patterns:
- Tapered: Once a week for 3 weeks, then every 2 weeks for a month, then monthly. Mirrors how SSRIs are tapered.
- Monthly: One session per month, indefinitely.
- Quarterly: One session every 3 months for stable, long-term responders.
Pros: simple, predictable, easy to schedule. Cons: you’re doing sessions whether you need them or not.
2. Symptom-Triggered Re-Treatment
No scheduled maintenance — instead, you do a short re-treatment course (typically 6-15 sessions over 2-3 weeks) when symptoms return.
Pros: you only get treatment when you need it. Cons: requires reliable self-monitoring and a clinic that can fit you in fast when symptoms flare.
3. Hybrid (Most Common in Practice)
Light scheduled maintenance (monthly or every other month) plus a planned re-treatment if symptoms flare past a threshold (e.g., PHQ-9 returns to ≥10, or your daily mood log drops persistently).
This is what most clinics actually do. It catches both the people who drift slowly (caught by scheduled checks) and the people who relapse acutely (caught by the symptom trigger).
What a Maintenance Session Feels Like
The session itself is identical to your acute-course sessions: same chair, same coil position, same intensity. The only difference is psychological — you’re not in crisis, you don’t desperately need it to work, and 20 minutes feels much shorter when you’re not hoping it will save you.
Most maintenance sessions don’t include re-mapping motor threshold (already known from your acute course). Some clinics will re-check threshold every 6-12 months in case it’s drifted.
Insurance Coverage in 2026
Maintenance TMS coverage is uneven, and some insurers’ policies (for example Aetna’s) treat maintenance TMS as experimental. Retreatment courses for prior responders who relapse are more likely to be covered than scheduled maintenance.
Ask your clinic and insurer upfront how each of these is handled under your plan:
- Re-treatment courses for prior responders who relapse (policies such as Cigna’s and Aetna’s consider repeat courses when the prior course produced a greater than 50% improvement lasting at least two months)
- Scheduled maintenance sessions after a response
- Long-term monthly maintenance
The single most useful thing you can do is have your clinic file maintenance as “continued treatment for chronic, recurrent major depressive disorder, currently in partial/full remission, with documented prior TMS response.” Insurers differ on what they look for, so ask your clinic how they document it.
If your insurance denies, ask your clinic about appealing. Don’t give up at the first no.
How to Tell If You’re Drifting
The single most useful thing you can do during maintenance is monitor objectively. Memory is unreliable here — depression distorts your sense of how you’ve been feeling.
The minimum useful tracking:
- Re-take the PHQ-9 monthly (or whatever your clinic used at intake).
- Keep a daily 0-10 mood score with one short note (“kid stressful day, slept fine, walked dog”).
- Watch sleep — for many people, sleep changes show up before mood does.
Signs to act on, not wait through:
- PHQ-9 returns to 10+ or rises 5+ points from your remission baseline.
- Sleep onset >30 min, or waking ≥2 hours before alarm, for ≥1 week.
- You stop returning texts or canceling social plans.
- Morning dread comes back.
- You start avoiding things you’d resumed enjoying.
If two of these stack within 2-3 weeks, contact your clinic. Don’t wait for the 6-month check-in.
Re-Treatment Courses (When Maintenance Isn’t Enough)
If symptoms have meaningfully returned, a shorter re-treatment course is the standard response. Typical re-treatment:
- 6-15 sessions over 2-3 weeks (vs. 30-36 for the original course).
- Same protocol that worked the first time, unless you’re changing strategies.
- Insurance-covered for documented prior responders in most cases.
Observational data suggests that many prior responders respond again to retreatment, but response rates vary and no retreatment course is guaranteed to work.
What If a Re-Treatment Doesn’t Restore Benefit?
It happens — not everyone who responded the first time responds again. Options at that point:
- Switch protocol: 10 Hz to iTBS, left to bilateral, conventional to accelerated/SAINT.
- Switch target: neuronavigation-guided to your individual functional connectivity, or deep TMS coil if relevant.
- Add a different modality: Spravato, ketamine, or augmented medication strategies.
- ECT: still the most effective option for severe, repeatedly treatment-resistant depression.
The clinic that helps you escalate sensibly is the clinic worth maintaining a relationship with for years.
What You Can Do Outside the Clinic
Maintenance TMS works best as part of a broader maintenance plan. Many clinicians emphasize that day-to-day habits matter for long-term outcomes:
- Regular sleep schedule, even on weekends.
- Exercise, ideally 150+ min/week of anything that gets your heart rate up.
- Therapy (CBT, IPT, behavioral activation) — an evidence-based depression treatment in its own right that many clinicians recommend alongside TMS.
- Social contact, deliberate and structured.
- Medication continuity if you’re on one — don’t taper without telling your psychiatrist.
- Light exposure, particularly morning light, particularly in winter.
- Avoiding alcohol in patterns that disrupt sleep.
These aren’t substitutes for maintenance TMS, but they support overall depression management.
Bottom Line
Maintenance is the part of TMS that protects everything you just earned in the acute course. A meaningful share of responders lose some benefit within a year. The system that works isn’t complicated: monitor with a PHQ-9, watch sleep, intervene early, do scheduled or symptom-triggered booster sessions, and pair it with the lifestyle and therapy basics.
The single biggest mistake people make is assuming the 6-week course was the whole treatment. It was the loading dose. The maintenance is the rest of the prescription.
Talk to your clinic about a written maintenance plan before your acute course ends — when the psychiatrist still has you in front of them and momentum is on your side. Don’t wait until you’re back in the dark to figure out what comes next.
Related reading
- TMS for Multiple Sclerosis: Addressing Fatigue, Depression, and Cognitive Impairment
- What TMS Actually Feels Like: A Session-by-Session Guide
- How to Prepare for Your First TMS Session
- Preparing for Your First TMS Session: A Practical Walkthrough
- TMS for Treatment-Resistant Depression: What Patients Need to Know
