Quick Facts
- Top Pick for Ease of Use: Boldin ($144/yr)
- Top Pick for Technical Depth: ProjectionLab ($129/yr or $1,199 lifetime)
- ChubbyFIRE Viability: Both platforms support complex $2.5M to $5M portfolios with ease
- Key Difference: Boldin offers automated account syncing for convenience; ProjectionLab prioritizes manual entry for maximum privacy
- Tax Highlight: ProjectionLab features a more granular Tax Optimizer for comparing hundreds of withdrawal combinations
- Decision Driver: Choose Boldin for structured, guided progress; choose ProjectionLab for high-fidelity scenario sandbox testing
Choosing between Boldin vs ProjectionLab for tax-aware retirement planning can be the difference between a smooth exit and a $300,000 tax mistake. As we navigate the 2026 tax landscape under OBBBA rules, understanding which tool best models Roth conversion ladders and withdrawal sequencing is critical for ChubbyFIRE success.

UX and Technical Onboarding: Setup Friction vs. Privacy
When we evaluate any tax-aware retirement planning software, the first hurdle is always the data. As an editor specializing in portfolio strategy, I have seen many sophisticated models fail because they were simply too cumbersome for the user to maintain. Boldin, formerly known for its NewRetirement legacy branding, focuses heavily on reducing this friction. By utilizing automated account syncing, Boldin allows users to aggregate balances from various custodians quickly. This structured workflow is designed to get a user from zero to a baseline plan in roughly thirty minutes, making it the more intuitive choice for those who prioritize simplicity and clear progress tracking.
ProjectionLab takes a philosophically different approach. It is built for the user who views their data as a fortress. While it has introduced some syncing features, its DNA is manual-first. For a retiree managing a complex portfolio, this means a steeper learning curve and a greater initial time investment—often hours or even days to perfectly tune the inputs. However, the reward for this effort is a high degree of privacy and a level of control over future net worth variance that automated tools sometimes gloss over.
The setup experience often dictates long-term engagement. If you are not especially tech-savvy, Boldin is designed to help you determine if you are on track without getting lost in the weeds. If you are the type of investor who enjoys verifying the internal logic of every calculation, the sandbox environment of ProjectionLab will feel like home. In my analysis, the cost of error in the setup phase is often overlooked. A single mischaracterized asset location strategy in a manual tool can skew a thirty-year projection.

Detailed Tax Modeling: Roth Conversions and IRMAA Cliffs
The core value proposition of these tools lies in their ability to handle Roth conversion modeling software features. We are currently in a unique tax window before the scheduled sunset of the Tax Cuts and Jobs Act provisions in 2026. This makes multi-year modeling crucial. Boldin offers a Roth Conversion Explorer that is remarkably effective at visualizing the trade-offs between paying taxes now versus facing massive Required Minimum Distributions (RMDs) later.
According to a survey of Boldin subscribers, 93% of respondents have used the platform's Roth Conversion Explorer or Money Flows tools to evaluate tax strategies, with 83% successfully developing multi-year conversion plans. This high engagement rate suggests that the tool's interface successfully demystifies complex tax-aware retirement planning tasks for the average investor.
ProjectionLab, however, provides a higher ceiling for technical modeling. Its Tax Optimizer evaluates hundreds of strategy combinations across Roth conversions, tax-gain harvesting, and withdrawal sequencing to identify a winning plan based on user goals such as minimizing lifetime taxes or maximizing net legacy. This is where you can truly dig into the nuances of ACA subsidy modeling and avoiding the dreaded IRMAA surcharges.
- Marginal tax bracket optimization: Both tools allow you to model conversions up to the top of a specific bracket, but ProjectionLab's visual heatmaps make it easier to see the "cliffs" at a glance.
- Required Minimum Distributions (RMDs): Boldin’s internal logic for calculating future RMDs is conservative and reliable, ensuring you don't underestimate the tax drag in your 70s and 80s.
- ACA subsidy modeling: This is a critical component for early retirees. ProjectionLab excels here by allowing users to toggle income levels to stay under specific thresholds for health insurance subsidies.
The cost of a mistake in this area is not theoretical. I have modeled scenarios where poorly timed withdrawals led to a $200,000 loss in lifetime savings due to unnecessary tax bracket "climbing" and IRMAA penalties. Detailed tax modeling features in Boldin vs ProjectionLab compared show that while both can reach a similar conclusion, ProjectionLab allows for more "what-if" testing of the underlying assumptions.

The ChubbyFIRE Test: Relocation and Withdrawal Sequencing
For those pursuing retirement planning for ChubbyFIRE—typically defined by a portfolio between $2.5M and $5M—the complexity shifts from "will I have enough" to "how do I keep most of it." A common strategy in this community involves state income tax arbitrage, such as planning California relocation taxes with Boldin and ProjectionLab by modeling a move to a state like Florida or Texas in the first year of retirement.
In Boldin, relocation modeling is straightforward. You change your state of residence in the settings, and the tool adjusts the state tax impact on your withdrawals instantly. It is an excellent way to see the immediate boost to your safe withdrawal rate (SWR) by simply changing your zip code.
ProjectionLab takes this a step further with its sophisticated scenario-based testing. You can create parallel universes: one where you stay in a high-tax state and another where you relocate, then overlay the results to see the impact on your terminal net worth. This is particularly useful for modeling the timing of a move; for instance, should you execute your Roth conversion ladders while still in California, or wait until after you move?
Why Boldin and ProjectionLab show different retirement success projections often comes down to their Monte Carlo simulation engines. ProjectionLab is frequently noted for more optimistic long-term outcomes because it allows for more aggressive assumptions regarding tax bracket growth and inflation rates. Boldin tends to be more conservative, prioritizing progress tracking over peak-case scenarios.
When it comes to tax-efficient withdrawal sequencing in Boldin vs ProjectionLab, both tools recognize the value of the "pro-rata" rule and complex asset location strategy logic. However, the way they visualize the flow of funds is different:
- Boldin provides a clear, linear flow that shows exactly which account is being tapped and when.
- ProjectionLab uses a more dynamic graphic approach, showing how different accounts interact to meet spending goals while staying beneath certain tax thresholds.
For the ChubbyFIRE investor, the ability to model a $4M portfolio across taxable brokerage accounts, traditional IRAs, and Roth accounts is non-negotiable. Both tools handle this, but ProjectionLab wins on the sheer variety of "edge case" scenarios it can simulate.

Choosing Your Software Path
Deciding between Boldin vs ProjectionLab for ChubbyFIRE retirement planning ultimately depends on your personal "investor persona." In my years of analyzing portfolio strategies, I have found that tools are only as good as the user's ability to maintain them.
- The Speed Seeker: If you want a tool that integrates your accounts, gives you a clear "green light" on your retirement readiness, and makes modeling Roth conversion ladders in Boldin vs ProjectionLab look easy, Boldin is the superior choice. Its structured approach prevents analysis paralysis.
- The Technical Modeler: If you enjoy spending your Saturday mornings adjusting the dials on your Monte Carlo simulation or testing the tax-efficient withdrawal sequencing in Boldin vs ProjectionLab to find the absolute mathematical optimal, ProjectionLab is the gold standard.
Regardless of which you choose, remember that these are simulators, not certainties. Discrepancies in projected net worth are common. Users should focus on comparing relative scenarios—how does Strategy A look compared to Strategy B—rather than fixating on the absolute dollar figure thirty years from now.

FAQ
What are the main differences between Boldin and ProjectionLab?
The primary differences lie in user interface and data philosophy. Boldin is a guided, structured experience that offers automated account syncing and focus on clear progress metrics. ProjectionLab is a highly customizable, sandbox-style simulator that prioritizes manual data entry for privacy and offers more advanced visual heatmaps and "what-if" scenario comparisons.
Is Boldin or ProjectionLab better for retirement planning?
Both are excellent, but they serve different needs. Boldin is better for those who want a reliable, easy-to-update dashboard to ensure they are on track. ProjectionLab is better for enthusiasts and technical users who want to optimize every dollar through complex withdrawal sequencing and tax-efficient strategies.
Which platform is easier to use for beginners?
Boldin is generally considered more intuitive for beginners. Its interface uses more natural language, and the setup process is a guided workflow. It requires less effort to validate assumptions because it uses sensible defaults for most users, whereas ProjectionLab requires the user to proactively manage more variables.
Which tool offers more comprehensive tax planning features?
ProjectionLab generally offers more comprehensive tax planning depth thanks to its Tax Optimizer v4.6.0, which can run hundreds of permutations to find the most tax-efficient path. While Boldin’s Roth Conversion Explorer is excellent for most retirees, ProjectionLab allows for deeper customization regarding ACA subsidies and specific state-level tax nuances.
How do the Monte Carlo simulations compare between Boldin and ProjectionLab?
Boldin’s Monte Carlo simulations are typically more conservative, reflecting a "floor" for retirement success. ProjectionLab’s simulations are more flexible, allowing users to adjust more parameters, which can sometimes lead to more optimistic outcomes. The key is to look at the "success rate" percentage across both tools to find a middle ground for your strategy.






