The child benefit reforms are a disaster waiting to happen

Osborne has underestimated the perverse incentives that removing the benefit from higher earners will create.

Starting next week, child benefit will gradually be withdrawn from over a million families with the aim of saving the government around £1.3bn a year. But the new system is complex to understand, difficult to administer and costly to implement. After U-turns and climb downs, the government has ended up with a dog’s breakfast.

From Monday, all families claiming child benefit, where one partner earns over £50,000, will have one per cent of their child benefit withdrawn for every additional £100 of income they earn up to the threshold of £60,000, at which point the benefit is completely withdrawn. Although the government has softened its original stance on child benefit withdrawal, it will still affect roughly 1.1 million families.

By complicating what is a very simple benefit, as reflected by its high take-up rate (97 per cent), this reform is set to create all sorts of perverse incentives. The Chancellor will effectively increase the marginal tax rate for families where one person earns between £50,000 and £60,000. The rate of child benefit is £20.30 a week (or £1,056 a year) for the first child, and £13.40 a week (£697 a year) for each additional child. Based on these figures the marginal tax rate for an individual earning over £50,000 with one child will be 52.6 per cent, rather than 42 per cent. But in the extreme case, a person with six children and earnings over £50,000 will face a staggering marginal tax rate of 87.4 per cent. This translates into a net income gain of just 12.6 pence for every pound earned.

Given these high marginal tax rates, the Chancellor may have underestimated the impact this change will have on work incentives. For people with children who earn between £50,000 and £60,000, there may be little incentive to seek promotion, as any increase in their earnings will erode their child benefit entitlement. The benefit withdrawal will also seem unfair to some households. Two people in one household who both earn under £50,000, but together earn, say, £80,000 will not lose any child benefit, while a family with a single earner on £60,000 will lose it all.

The Chancellor may also have overestimated the savings that this move will bring. One logical response for someone facing a very high marginal tax rate due to the withdrawal of child benefit would be to increase their contributions to their pension. If enough people diverting earnings towards their pension pot, it could dramatically reduce the amount the government saves.

Rather than making complex changes to child benefit, the government would do better to conduct a more fundamental review of its support for families. There is evidence to suggest that spending on services for families instead of benefits is more effective in reducing child poverty. The government could extend its freeze on child benefit and use the savings to fund affordable childcare. This would avoid complicated reforms, cliff edges and perverse work incentives. Providing quality universal childcare should be a national strategic priority for public service and welfare reform, particularly as the cost of childcare largely influences parental decisions on whether work pays.

If the government is genuinely committed to welfare reform, then affordable childcare, rather than fiddly means testing, would offer the best help to struggling families.

Amna Silim is a researcher at IPPR

Chancellor George Osborne leaves Number 11 Downing Street. Photograph: Getty Images.
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Inside Big Ben: why the world’s most famous clock will soon lose its bong

Every now and then, even the most famous of clocks need a bit of care.

London is soon going to lose one of its most familiar sounds when the world-famous Big Ben falls silent for repairs. The “bonging” chimes that have marked the passing of time for Londoners since 1859 will fall silent for months beginning in 2017 as part of a three-year £29m conservation project.

Of course, “Big Ben” is the nickname of the Great Bell and the bell itself is not in bad shape – even though it does have a huge crack in it.

The bell weighs nearly 14 tonnes and it cracked in 1859 when it was first bonged with a hammer that was way too heavy.

The crack was never repaired. Instead the bell was rotated one eighth of a turn and a lighter (200kg) hammer was installed. The cracked bell has a characteristic sound which we have all grown to love.

Big Ben strikes. UK Parliament.

Instead, it is the Elizabeth Tower (1859) and the clock mechanism (1854), designed by Denison and Airy, that need attention.

Any building or machine needs regular maintenance – we paint our doors and windows when they need it and we repair or replace our cars quite routinely. It is convenient to choose a day when we’re out of the house to paint the doors, or when we don’t need the car to repair the brakes. But a clock just doesn’t stop – especially not a clock as iconic as the Great Clock at the Palace of Westminster.

Repairs to the tower are long overdue. There is corrosion damage to the cast iron roof and to the belfry structure which keeps the bells in place. There is water damage to the masonry and condensation problems will be addressed, too. There are plumbing and electrical works to be done for a lift to be installed in one of the ventilation shafts, toilet facilities and the fitting of low-energy lighting.

Marvel of engineering

The clock mechanism itself is remarkable. In its 162-year history it has only had one major breakdown. In 1976 the speed regulator for the chimes broke and the mechanism sped up to destruction. The resulting damage took months to repair.

The weights that drive the clock are, like the bells and hammers, unimaginably huge. The “drive train” that keeps the pendulum swinging and that turns the hands is driven by a weight of about 100kg. Two other weights that ring the bells are each over a tonne. If any of these weights falls out of control (as in the 1976 incident), they could do a lot of damage.

The pendulum suspension spring is especially critical because it holds up the huge pendulum bob which weighs 321kg. The swinging pendulum releases the “escapement” every two seconds which then turns the hands on the clock’s four faces. If you look very closely, you will see that the minute hand doesn’t move smoothly but it sits still most of the time, only moving on each tick by 1.5cm.

The pendulum swings back and forth 21,600 times a day. That’s nearly 8m times a year, bending the pendulum spring. Like any metal, it has the potential to suffer from fatigue. The pendulum needs to be lifted out of the clock so that the spring can be closely inspected.

The clock derives its remarkable accuracy in part from the temperature compensation which is built into the construction of the pendulum. This was yet another of John Harrison’s genius ideas (you probably know him from longitude fame). He came up with the solution of using metals of differing temperature expansion coefficient so that the pendulum doesn’t change in length as the temperature changes with the seasons.

In the Westminster clock, the pendulum shaft is made of concentric tubes of steel and zinc. A similar construction is described for the clock in Trinity College Cambridge and near perfect temperature compensation can be achieved. But zinc is a ductile metal and the tube deforms with time under the heavy load of the 321kg pendulum bob. This “creeping” will cause the temperature compensation to jam up and become less effective.

So stopping the clock will also be a good opportunity to dismantle the pendulum completely and to check that the zinc tube is sliding freely. This in itself is a few days' work.

What makes it tick

But the truly clever bit of this clock is the escapement. All clocks have one - it’s what makes the clock tick, quite literally. Denison developed his new gravity escapement especially for the Westminster clock. It decouples the driving force of the falling weight from the periodic force that maintains the motion of the pendulum. To this day, the best tower clocks in England use the gravity escapement leading to remarkable accuracy – better even than that of your quartz crystal wrist watch.

In Denison’s gravity escapement, the “tick” is the impact of the “legs” of the escapement colliding with hardened steel seats. Each collision causes microscopic damage which, accumulated over millions of collisions per year, causes wear and tear affecting the accuracy of the clock. It is impossible to inspect the escapement without stopping the clock. Part of the maintenance proposed during this stoppage is a thorough overhaul of the escapement and the other workings of the clock.

The Westminster clock is a remarkable icon for London and for England. For more than 150 years it has reminded us of each hour, tirelessly. That’s what I love about clocks – they seem to carry on without a fuss. But every now and then even the most famous of clocks need a bit of care. After this period of pampering, “Big Ben” ought to be set for another 100 or so years of trouble-free running.

The Conversation

Hugh Hunt is a Reader in Engineering Dynamics and Vibration at the University of Cambridge.

This article was originally published on The Conversation. Read the original article.