As I was bringing home a loaf of freshly baked rye bread from the local bakery, I found a gas bill in my mailbox. It's still early October, but I'm already worried about winter.

Thinking back to last January's bill still makes me a bit upset. The gas bill, which was low in the summer, skyrocketed in the dead of winter, making those one or two months the hardest to get through.

This year, I decided to take a closer look at the equal payment plan, known as Budget Billing. To put it simply, it's not a program that saves you money.

Instead, it changes the rhythm of your payments. Understanding this difference is key to weighing the pros and cons.

The principle is simple. You pay a similar amount each month based on past usage, and at the end of the year, you settle up based on what you actually used.

Eversource operates this plan for both electricity and gas. They take your usage from the last 12 months (or 6 months), divide it by 11, and multiply it by the current rate to determine your first monthly payment.

The key point is dividing by 11 instead of 12. You pay evenly for 11 months, and the 12th month is used for the true-up.

If the amount owed at the true-up is less than the previous month's payment, only that difference is billed. If it's more, you pay only the previous month's amount, and the rest is added to the next year's 11 monthly payments.

Conversely, if you overpaid, you won't owe anything that month, and any remaining credit will be deducted from the next bill. Also, if you don't cancel, you'll automatically re-enroll each year.

National Grid's gas plan is slightly different. They review usage and rates every 3 to 6 months and adjust the monthly payment if necessary, notifying you a month in advance of any changes.

It seems the 12th month is also the true-up month. If you underpaid, you can choose to spread that amount over the next 12 months or pay it all at once.

While there are benefits, there are definitely downsides as well. First, the total amount over the year remains the same.

You're just spreading out the money that would be due in January over the summer, so there's no savings effect. It's easy to mistake this for a discount program, which can lead to disappointment.

Second, if rates go up, your monthly payment will increase as well. The term "equal" doesn't mean fixed.

This winter, I'm particularly concerned about this aspect. National Grid's Boston Gas filed a proposal with the Department of Public Utilities (DPU) for a $342 million increase in gas pipeline rates this past January.

If approved, Boston Gas customers could see their bills rise by 8.4%, according to the company's estimates. The DPU is expected to make a decision by November 30, and the new rates would take effect on January 1, 2027.

Third, if you miss a payment, the plan is broken. National Grid states that if you miss a monthly payment, the plan will automatically be suspended, and the entire balance will be due immediately.

Eversource can also drop you from the plan, but it's wise to ask about how any accumulated differences will be handled before canceling.

Fourth, any extra money you pay in the summer is essentially held by the company without interest. It may not be a large amount, but it doesn't feel great.

So, who is this plan for? If your income fluctuates or if a large payment each month disrupts your credit card bills, it can be a helpful tool.

On the other hand, if you can afford to set aside a lump sum for winter and are diligent about reviewing your monthly bills, you won't lose out by not enrolling.

Check the enrollment requirements as well. Eversource requires a history of usage for at least 12 months (6 months for non-heating gas) and no delinquencies.

National Grid requires you to have no delinquencies over 30 days before you can enter into a payment plan. The one-year cycle starts from the month you enroll.

The timing of your enrollment is also quite important. If you start in the summer, you'll accumulate credits before winter, and if you start just before winter, there will be a period where you pay less than your actual usage at the beginning.

If you're really tight on funds, there are other safety nets. Massachusetts has a winter protection program that prevents heating services from being shut off for households recognized as experiencing financial hardship from November 15 to March 15.

However, even during this period, charges continue to accumulate. You'll need to submit financial hardship documentation to receive protection, so it's best to call ahead if needed.

My choice is to enroll. It's not because I expect lower bills, but because I want to avoid that moment of shock when I open the bill in January.

Instead, I've set one principle: I plan to check my actual usage and accumulated differences in the app every quarter, and if the differences widen, I'll request an adjustment to my monthly payment.

After the rate increase decision comes out at the end of November, I'll take another look. It's much less painful to make small adjustments along the way than to get hit all at once during the true-up month.

Winter bread needs to be baked solidly to last long. If you set a framework for your utilities in advance, you'll have less to worry about in front of the bill this winter.