Nobody selling tax help wants to answer this question plainly, so here it is plainly. Timelines vary by exit, the urgent parts move faster than people fear, and the slow parts are slow for knowable reasons. Calibrate your expectations to these ranges and nothing about the process will surprise you.
The Fast Lane: Emergencies
Levy and garnishment releases move in days when the package is ready - hardship documentation assembled, compliance addressed, the right function on the phone. I have had wage levy releases hit payroll before the next check. Power of attorney filings reroute IRS contact within days of processing. Deadline protection - the Tax Court petition, the hearing request, the appeal - is same-week work. Whatever else is true about your case, the bleeding stops early.
The Middle Lane: Agreements and Status
Streamlined installment agreements set up in a phone call once filings are current. Negotiated agreements above $50,000 run weeks to a few months, paced by financial review and any back-and-forth over expenses. Currently not collectible determinations run on a similar clock. The pacing item in all of them is usually compliance: missing returns must be built and filed first, and six years of returns is realistically several weeks of work even moving briskly - the IRS transcripts that feed them arrive fast; the assembly takes the time it takes.
The Long Lane: Offers, Appeals, and Court
Offers in compromise run months from filing to decision, commonly the better part of a year including any appeal - the investigation is genuinely thorough, and collection generally pauses while it runs. Appeals conferences land some months after a protest. Tax Court cases run a year or more to trial, though most settle well before. None of this is dead time in a managed case: the statute keeps running where it should, interim protections hold, and the file strengthens.
The honest summary: emergencies in days, agreements in weeks-to-months, settlements and disputes in months-to-a-year-plus. Anyone quoting dramatically faster is selling; anyone vaguer is hiding the ball. Tell me your situation and I will give you the timeline for your actual case - dates, not vibes.